36 results on '"Bok Joo Kim"'
Search Results
2. Is distal segment ostectomy essential for stabilization of the condylar position in patients with facial asymmetry?
- Author
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Ki Eun Hong, Eun Sup Shin, Jun Park, Ji Eon Yun, Chul Hoon Kim, Jung Han Kim, and Bok Joo Kim
- Subjects
Distal segment ostectomy ,BSSRO ,Condyle position ,Mandibular prognathism ,Dentistry ,RK1-715 ,Surgery ,RD1-811 - Abstract
Abstract Background The purpose of this retrospective study was to evaluate the postoperative change in the position and stability of the mandibular condyle after bilateral sagittal split ramus osteotomy (BSSRO) and BSSRO with distal segmental ostectomy (DSO) in patients with facial asymmetry using 3D computed tomography. Methods The condyles of the patient diagnosed with facial asymmetry were divided into the deviated side (DS) and the non-deviated side (NDS). Group I, which was treated with BSSRO only, and Group II, which additionally received DSO along with BSSRO, were superimposed on the condyle using the pre-and postoperative 3D CT. The amount of condylar change in anteroposterior displacement, mediolateral displacement, and rotation was measured. The clinical symptoms of temporomandibular joint were also evaluated before and after surgery for each patient. Results Between Groups I and II, there was no statistically significant difference in the anteroposterior condylar position on both DS and NDS. And also, there was no statistical difference between the two groups in the mediolateral change on DS but, statistically significant difference on NDS. The change in the rotation of the condyle was observed to rotate inward from both condylar heads of Groups I and II, and a statistically significant difference was observed between the two groups on both DS and NDS. Moreover, no difference in clinical temporomandibular joint symptoms was observed after surgery in each DS and NDS condyle of the two groups. Conclusions As a result of analyzing the condylar position change of the group treated with BSSRO alone and the group treated with BSSRO and DSO in patients with facial asymmetry, there were statistically significant differences in the mediolateral displacement of NDS and the condyle rotation of NDS and DS. However, the anteroposterior condylar position did not show any difference in the bilateral condyles. In addition, since worsening clinical symptoms of bilateral temporomandibular joint were not observed before and after surgery in both groups, it is concluded that it is not necessary to accompany DSO in patients with facial asymmetry (minimum 3 mm, maximum 7 mm).
- Published
- 2021
- Full Text
- View/download PDF
3. Immediate implant placement following tooth extraction with simultaneous lateral sinus augmentation: a retrospective clinical study after at least 1 year of loading
- Author
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Bok-Joo Kim, Chul-Hoon Kim, and Jung-Han Kim
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Dental implant ,Immediate placement ,Sinus augmentation ,Survival rate ,Medicine ,Dentistry ,RK1-715 - Abstract
Abstract Background Lateral sinus augmentation is necessary when the residual bone height is insufficient in the posterior maxilla. Immediate implant placement following tooth extraction with lateral sinus augmentation will shorten the number of operations and treatment time. Purpose To evaluate radiologic and clinical results for at least 1 year after loading in patients who underwent tooth extraction, implant placement, and lateral sinus augmentation at the same time. Materials and methods We retrospectively evaluated 35 implants placed in 25 patients. Preoperative and postoperative CBCT were compared and analyzed for residual bone height (RBH) and increased bone height (IBH), the initial torque value (ITV), and the implant stability quotient (ISQ). A comparative evaluation was performed between a 1-stage (non-submerged) group and a 2-stage (submerged) group. After loading for at least 1 year, clinical and radiological evaluations were performed to evaluate the survival rate. Results One of the 35 implants failed in osseointegration, and the remaining 34 showed successful results. The failure-free survival rate at 1 year was 97.06% (95% CI, 91.38-100.0%). The RBH ranged from 3.1 to 9.6 mm (mean, 5.62 ± 1.68 mm), and the IBH ranged from 3 to 15.3 mm (mean, 8.87 ± 2.74 mm). Among the RBH, ITV, ISQ, treatment period, final bone height, and failure evaluation by stage of implant placement, only ISQ showed statistical significance between the groups (p < .001). A comparison of RBH, ITV, and ISQ, regardless of group, showed that each value tended to increase, but there were no statistically significant differences. Conclusions Immediate implant placement following tooth extraction with simultaneous lateral sinus augmentation is considered reliable even though the procedures had been performed at the same time.
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- 2021
- Full Text
- View/download PDF
4. The effect of autogenous tooth bone graft material without organic matter and type I collagen treatment on bone regeneration
- Author
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Min-Gu Kim, Jung-Han Lee, Gyoo-Cheon Kim, Dae-Seok Hwang, Chul-Hun Kim, Bok-Joo Kim, Jung-Han Kim, and Uk-Kyu Kim
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Tooth bone graft material ,Type I collagen ,Autogenous graft ,Dentistry ,RK1-715 ,Surgery ,RD1-811 - Abstract
Abstract Objectives The aim of this study is to examine the effect of particulate autogenous tooth graft removed with organic matter and type I collagen addition on bone regeneration and to validate the possibility of useful allograft material for jaw defects. Material and methods Autogenous tooth bone maker (Korean Dental Solution® KOREA) made particulate autogenous tooth not including organic matter. We used to the developed tooth grafts for experiment. Cell adhesion test with hemacytometer and energy dispersive X-ray spectroscopy (Supra40 VP®, Carl Zeiss, Germany) analysis about the particulate autogenous tooth and type I collagen were performed. Rabbits were divided into three groups: bone graft with organic matter (OM) removing particulate autogenous tooth group, bone graft with OM removing particulate autogenous tooth and type I collagen group, and a control group. Bone grafting was performed in rabbit’s calvaria. The rabbits were sacrificed at different interval at 1, 2, 4, and 6 weeks after bone grafting for the histopathologic observation and observed the effect of bone regeneration by SEM, H-E & Masson stains, osteocalcin IHC staining. Result In vitro cytopathological study showed affinity for cells, cell attachment pattern, and cell proliferation in the order of control group, OM-removed and collagen-treated group, OM-removed particulate autogenous tooth group. The results of the degree of mineralization were opposite to those of the previous cell experimental results, and the OM-removed group, OM-removed group and collagen-treated group were relatively higher than the control group. Histopathologic analysis showed that vascularization and neonatal bone formation were higher in particulate autogenous tooth group with removing OM and with addition of collagen than control group and group of OM removed only. Immunohistochemical analysis showed that osteocalcin (OSC) expression was not observed in the control group, but at 4 weeks groups, OSC expression was observed the OM removed and OM-removed-collagen-treated particulate autogenous tooth, and the degree of expression was somewhat stronger in group of the OM removed and collagen additionally treated particulate autogenous tooth. Conclusion Particles that do not contain organic matter, the saint tooth, was responsible for sufficient bone graft material through the role of space maintenance and bone conduction, and further improved bone formation ability through additional collagen treatment. Therefore, research on various extracellular substrates and autologous bone grafting materials is necessary, and through this, it is possible to lay the foundation for a new type of autologous bone grafting material with excellent academic and technical utility.
- Published
- 2021
- Full Text
- View/download PDF
5. Tenting effect of dental implant on maxillary sinus lift without grafting
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Dong-Suk Song, Chul-Hoon Kim, Bok-Joo Kim, and Jung-Han Kim
- Subjects
Dental implant ,Bone formation ,Maxillary sinus augmentation ,Sinus lift ,Dentistry ,RK1-715 - Abstract
Background/purpose: Maxillary sinus lift without grafting is an alternative procedure that is used to lower the risk of infection and facilitate the surgical procedure. The objective of this study was to evaluate the tenting effect of the dental implant by measuring the amount and morphology of bone formation around it. Material and methods: 49 implants were placed in 26 patients by maxillary sinus lift without grafting. Radiographic images were taken preoperatively and at 6 months postoperatively and used to evaluate the height of the residual bone, the width of the maxillary sinus, the amount of bone formation, and the adjacent tooth. Results: The most common type of bone formed around the implant, as seen in 23 cases, was the same height as the apex of the implant; in 11 cases, it was 0–2 mm above the apex of the implant, and in 7 cases, 2 mm or more. Meanwhile, 5 cases showed defects. The tent type of bone formation, which showed more bone formation at the implant apex than in the surrounding bone, was overwhelmingly the most common. (80.4%) The amount of bone formation increased in proportion to the difference between the residual bone height and the implant length. (P
- Published
- 2020
- Full Text
- View/download PDF
6. Positional changes of the mandibular condyle in unilateral sagittal split ramus osteotomy combined with intraoral vertical ramus osteotomy for asymmetric class III malocclusion
- Author
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Jun Park, Bok-Joo Kim, Jung-Han Kim, Eun-Sup Shin, Ji-Eon Yun, Ki-Eun Hong, and Chul-Hoon Kim
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Orthodontics ,Sagittal split ramus osteotomy ,business.industry ,medicine.medical_treatment ,Orthognathic surgery ,Temporomandibular joint disorder ,medicine.disease ,Intraoral vertical ramus osteotomy ,Condyle ,Chin ,medicine.anatomical_structure ,stomatognathic system ,Oral and maxillofacial surgery ,medicine ,Temporomandibular Joint Disorder ,Original Article ,Surgery ,Displacement (orthopedic surgery) ,Oral Surgery ,Malocclusion ,business ,Facial asymmetry ,Facial symmetry - Abstract
Objectives In the present study, the effects of sagittal split ramus osteotomy (SSRO) combined with intraoral vertical ramus osteotomy (IVRO) for the treatment of asymmetric mandible in class Ⅲ malocclusion patients were assessed and the postoperative stability of the mandibular condyle and the symptoms of temporomandibular joint disorder (TMD) evaluated. Materials and Methods A total of 82 patients who underwent orthognathic surgery for the treatment of facial asymmetry or mandibular asymmetry at the Department of Oral and Maxillofacial Surgery, Dong-A University Hospital, from 2016 to 2021 were selected. The patients that underwent SSRO with IVRO were assigned to Group I (n=8) and patients that received bilateral SSRO (BSSRO) to Group II (n=10, simple random sampling). Preoperative and postoperative three-dimensional computed tomography (CT) axial images obtained for each group were superimposed. The condylar position changes and degree of rotation on the superimposed images were measured, and the changes in condyle based on the amount of chin movement for each surgical method were statistically analyzed. Results Group I showed a greater amount of postoperative chin movement. For the amount of mediolateral condylar displacement on the deviated side, Groups I and II showed an average lateral displacement of 0.07 mm and 1.62 mm, respectively, and statistically significantly correlated with the amount of chin movement (P=0.004). Most of the TMD symptoms in Group I patients who underwent SSRO with IVRO showed improvement. Conclusion When a large amount of mandibular rotation is required to match the menton to the midline of the face, IVRO on the deviated side is considered a technique to prevent condylar torque. In the present study, worsening of TMD symptoms did not occur after orthognathic surgery in any of the 18 patients.
- Published
- 2021
7. Parameters affecting improvement of excessive daytime sleepiness in obstructive sleep apnea patients
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Sang Hoo Park, Woo Yong Bae, Sangjun Kim, Young Gun Kim, Young Bin Yun, Hyung Geun Lee, Bok Joo Kim, and Jung-han Kim
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Sleep Apnea, Obstructive ,Cholesterol ,Otorhinolaryngology ,Polysomnography ,Humans ,Disorders of Excessive Somnolence ,Retrospective Studies - Abstract
Obstructive sleep apnea (OSA) is a sleep-related breathing disorder caused by repetitive obstruction of the upper airway; this impairs gaseous exchange, resulting in hypoxia, hypercapnia, and frequent arousals. Excessive daytime sleepiness (EDS) is a common daytime symptom of OSA. EDS manifests as fatigue and impaired attention, leading to poor performance at work and falling asleep while driving, which is a major socioeconomic problem. Therefore, it is important to properly treat EDS and accurately predict the response to treatment. However, few studies have compared OSA patients showing and not showing improvement in EDS. Therefore, this study aimed to objectively analyze and compare EDS improvement and non-improvement groups.We retrospectively reviewed the medical records of 57 OSA patients with EDS. Patients were divided into two groups according to the improvement in EDS after positive airway pressure (PAP) device treatment. We analyzed differences in clinical records including patients' age, sex, history of smoking, hypertension, diabetes, myocardial infarction, and cerebrovascular disease between the two groups. Systolic, diastolic blood pressure, blood test including blood glucose, total cholesterol, high- and low-density lipoprotein cholesterol, and triglyceride levels were also analyzed. Polysomnography (PSG) data, PAP device treatment compliance and scores of questionnaires related to various psychiatric symptoms, subjective sleep quality between the two groups were also analyzed.There was no statistically significant difference in age, gender, or past medical history between the two groups. Systolic and diastolic blood pressure, and blood test results, were also not significantly different. Among the questionnaires related to various psychiatric symptoms, the groups showed statistically significant differences in Social Avoidance and Distress Scale (SADS) and Fear of Negative Evaluation (FNE) scores (P = 0.001 and 0.020, respectively). The group differences in the scores on the other questionnaires were not significantly different. Among the PSG items, significant group differences were observed in the percentage of stage 2 non-REM sleep (N2%, P = 0.023), apnea index (AI, P = 0.005), apnea-hypopnea index (AHI, P = 0.023), and frequency of 3 % oxygen desaturation (ODI3, P = 0.001). No obesity-related parameters showed significant group differences. The percentage of days on which a PAP device was used (out of 90 days; PAP%) and percentage of days on which a PAP device was used for4 h (Time4%) did not differ significantly.The SADS, FNE, AI, AHI, N2%, and ODI3 parameters differed significantly between the EDS improvement and non-improvement groups. These parameters may help clinicians treat and predict the prognosis of patients suffering with EDS.
- Published
- 2022
8. The effect of autogenous tooth bone graft material without organic matter and type I collagen treatment on bone regeneration
- Author
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Dae-Seok Hwang, Bok-Joo Kim, Uk-Kyu Kim, Jung-Han Lee, Chul-Hun Kim, Min-Gu Kim, Jung-Han Kim, and Gyoo-Cheon Kim
- Subjects
medicine.medical_specialty ,Tooth bone graft material ,biology ,RD1-811 ,business.industry ,Research ,medicine.medical_treatment ,Dentistry ,Calvaria ,RK1-715 ,Bone grafting ,Grafting ,Staining ,Autogenous graft ,Plastic surgery ,medicine.anatomical_structure ,medicine ,Osteocalcin ,biology.protein ,Surgery ,Type I collagen ,Bone regeneration ,business - Abstract
Objectives The aim of this study is to examine the effect of particulate autogenous tooth graft removed with organic matter and type I collagen addition on bone regeneration and to validate the possibility of useful allograft material for jaw defects. Material and methods Autogenous tooth bone maker (Korean Dental Solution® KOREA) made particulate autogenous tooth not including organic matter. We used to the developed tooth grafts for experiment. Cell adhesion test with hemacytometer and energy dispersive X-ray spectroscopy (Supra40 VP®, Carl Zeiss, Germany) analysis about the particulate autogenous tooth and type I collagen were performed. Rabbits were divided into three groups: bone graft with organic matter (OM) removing particulate autogenous tooth group, bone graft with OM removing particulate autogenous tooth and type I collagen group, and a control group. Bone grafting was performed in rabbit’s calvaria. The rabbits were sacrificed at different interval at 1, 2, 4, and 6 weeks after bone grafting for the histopathologic observation and observed the effect of bone regeneration by SEM, H-E & Masson stains, osteocalcin IHC staining. Result In vitro cytopathological study showed affinity for cells, cell attachment pattern, and cell proliferation in the order of control group, OM-removed and collagen-treated group, OM-removed particulate autogenous tooth group. The results of the degree of mineralization were opposite to those of the previous cell experimental results, and the OM-removed group, OM-removed group and collagen-treated group were relatively higher than the control group. Histopathologic analysis showed that vascularization and neonatal bone formation were higher in particulate autogenous tooth group with removing OM and with addition of collagen than control group and group of OM removed only. Immunohistochemical analysis showed that osteocalcin (OSC) expression was not observed in the control group, but at 4 weeks groups, OSC expression was observed the OM removed and OM-removed-collagen-treated particulate autogenous tooth, and the degree of expression was somewhat stronger in group of the OM removed and collagen additionally treated particulate autogenous tooth. Conclusion Particles that do not contain organic matter, the saint tooth, was responsible for sufficient bone graft material through the role of space maintenance and bone conduction, and further improved bone formation ability through additional collagen treatment. Therefore, research on various extracellular substrates and autologous bone grafting materials is necessary, and through this, it is possible to lay the foundation for a new type of autologous bone grafting material with excellent academic and technical utility.
- Published
- 2021
9. Immediate reconstruction of mandibular defect after treatment of medication-related osteonecrosis of the jaw (MRONJ) with rhBMP-2/ACS and miniplate: Review of 3 cases
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Kyung-Jin Kim, Bok-Joo Kim, Chul-Hoon Kim, Mu-seong Kim, and Jung-Han Kim
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musculoskeletal diseases ,medicine.medical_specialty ,Radiography ,medicine.medical_treatment ,Miniplate ,Article ,Collagen sponge ,03 medical and health sciences ,0302 clinical medicine ,Medicine ,Medical history ,Stage (cooking) ,Case series ,business.industry ,Mandible ,food and beverages ,Bisphosphonate ,medicine.disease ,Medication-related osteonecrosis of the jaws ,Surgery ,Sequestrectomy ,030220 oncology & carcinogenesis ,030211 gastroenterology & hepatology ,Bone morphogenic protein ,business ,Osteonecrosis of the jaw - Abstract
Highlights • The pathogenesis of MRONJ is related to repression of osteoclast mediated bone remodeling. • rhBMP-2 can stimulate not only osteoblasts but also osteoclasts and induce new bone formation. • ACS has been proved to be a good carrier of rhBMP-2 with maximal efficacy. • Application of rhBMP-2/ACS can be a new approach to surgical treatment for MRONJ patients., Introduction The purpose of this study was to pursue, and to report the results of, mandibular reconstruction and rehabilitation of medication-related osteonecrosis of the jaw (MRONJ) patients having large critical-sized defects of the mandible using a combination of recombinant human bone morphogenetic protein-2 (rhBMP-2) and absorbable collagen sponge (ACS) with surgical miniplate without any grafting materials. Case presentation Three (3) patients aged 67 and 86 (2 patients) presented due to discomfort on the mandible. They all had a medical history of bisphosphonate and steroids treatment orally or intravenously, and all had been diagnosed as MRONJ stage 3. Sequestrectomy and saucerization were performed, and then a surgical miniplate (Hansolmedical, Korea) was adapted and fixed on the sound portion of the mandible. rhBMP-2 was loaded onto an ACS at a dose of 1.5 mg/cc. Several rhBMP-2 (Cowellmedi, Korea)/ACS (Ateloplug, TRMkorea, Korea) were placed into the bony defect with a surgical miniplate. All 3 patients recovered without complications. They all exhibited radiographic evidence of bone formation by 3 months postoperatively in every case. Conclusions All 3 patients were treated successfully with rhBMP-2/ACS and miniplate without any complications. This protocol reported herein represents a new approach to the surgical treatment of maxillofacial bone defects and deficiencies, especially in MRONJ patients.
- Published
- 2020
10. Is distal segment ostectomy essential for stabilization of the condylar position in patients with facial asymmetry?
- Author
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Jung Han Kim, Bok Joo Kim, Jun Park, Eun Sup Shin, Ji Eon Yun, Ki Eun Hong, and Chul-Hoon Kim
- Subjects
Orthodontics ,BSSRO ,medicine.medical_specialty ,RD1-811 ,business.industry ,Research ,medicine.medical_treatment ,RK1-715 ,Distal segment ostectomy ,Condyle position ,Mandibular prognathism ,Condyle ,Temporomandibular joint ,Plastic surgery ,medicine.anatomical_structure ,stomatognathic system ,Dentistry ,Oral and maxillofacial surgery ,medicine ,Surgery ,In patient ,Displacement (orthopedic surgery) ,Ostectomy ,business ,Facial symmetry - Abstract
Background The purpose of this retrospective study was to evaluate the postoperative change in the position and stability of the mandibular condyle after bilateral sagittal split ramus osteotomy (BSSRO) and BSSRO with distal segmental ostectomy (DSO) in patients with facial asymmetry using 3D computed tomography. Methods The condyles of the patient diagnosed with facial asymmetry were divided into the deviated side (DS) and the non-deviated side (NDS). Group I, which was treated with BSSRO only, and Group II, which additionally received DSO along with BSSRO, were superimposed on the condyle using the pre-and postoperative 3D CT. The amount of condylar change in anteroposterior displacement, mediolateral displacement, and rotation was measured. The clinical symptoms of temporomandibular joint were also evaluated before and after surgery for each patient. Results Between Groups I and II, there was no statistically significant difference in the anteroposterior condylar position on both DS and NDS. And also, there was no statistical difference between the two groups in the mediolateral change on DS but, statistically significant difference on NDS. The change in the rotation of the condyle was observed to rotate inward from both condylar heads of Groups I and II, and a statistically significant difference was observed between the two groups on both DS and NDS. Moreover, no difference in clinical temporomandibular joint symptoms was observed after surgery in each DS and NDS condyle of the two groups. Conclusions As a result of analyzing the condylar position change of the group treated with BSSRO alone and the group treated with BSSRO and DSO in patients with facial asymmetry, there were statistically significant differences in the mediolateral displacement of NDS and the condyle rotation of NDS and DS. However, the anteroposterior condylar position did not show any difference in the bilateral condyles. In addition, since worsening clinical symptoms of bilateral temporomandibular joint were not observed before and after surgery in both groups, it is concluded that it is not necessary to accompany DSO in patients with facial asymmetry (minimum 3 mm, maximum 7 mm).
- Published
- 2021
11. Implant Placement of Severe Alveolar Bone Resorption Site with Oroantral Fistula: A Case Report
- Author
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Bok-Joo Kim, Moo-Sung Kim, Do-Hee Kim, Kuk-Won Jang, Hee-Sung Hawng, Chul-Hun Kim, and Jung-Han Kim
- Subjects
Implant placement ,business.industry ,Oroantral fistula ,Medicine ,Dentistry ,business ,Dental alveolus ,Resorption - Published
- 2018
12. Comparison of recombinant human bone morphogenetic protein-2-infused absorbable collagen sponge, recombinant human bone morphogenetic protein-2-coated tricalcium phosphate, and platelet-rich fibrin-mixed tricalcium phosphate for sinus augmentation in rabbits
- Author
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Bok-Joo Kim, Mi-Ha Ju, and Chul-Hun Kim
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Pathology ,medicine.medical_specialty ,Maxillary sinus ,Dentistry ,02 engineering and technology ,Bone morphogenetic protein ,Bone morphogenetic protein 2 ,03 medical and health sciences ,0302 clinical medicine ,BMP-2 ,medicine ,sinus augmentation ,absorbable collagen sponge ,Bone regeneration ,General Dentistry ,Sinus (anatomy) ,Bone decalcification ,business.industry ,Chemistry ,030206 dentistry ,021001 nanoscience & nanotechnology ,medicine.disease ,Platelet-rich fibrin ,lcsh:RK1-715 ,medicine.anatomical_structure ,lcsh:Dentistry ,Original Article ,TCP ,0210 nano-technology ,business ,PRF ,Calcification - Abstract
Background/purpose: Numerous grafting materials have been used in the bone regeneration of maxillary sinus to obtain a sufficient amount of new bone in implant dentistry. The objective of this study was to compare the potentials of Type I absorbable collagen sponge (ACS) impregnated with recombinant human bone morphogenetic protein (rhBMP)-2, rhBMP-2-coated tricalcium phosphate (TCP), platelet-rich fibrin-mixed TCP for enhancing bone regeneration in sinus augmentation in rabbits. Materials and methods: The sinus defects were grafted with rhBMP-2+ACS (Group A), rhBMP-2-coated TCP (Group B), and platelet-rich fibrin-mixed TCP (Group C). The specimens underwent decalcification, and were stained for histomorphometric analysis. Results: There were no significant differences in inflammatory features among the groups 1-week postoperation. In a histomorphometric analysis, the new bone formation ratio showed significant differences between groups at 2 weeks. rhBMP-2+ACS showed a larger and more rapid bone formation area at 2 weeks than those of Groups B and C. Conclusion: Our histological evaluation demonstrates that Type I ACS can be used as a carrier of rhBMP-2, and rhBMP-2+ACS showed rapid bone formation, remodeling, and calcification at Week 2 in rabbit. Keywords: absorbable collagen sponge, BMP-2, PRF, sinus augmentation, TCP
- Published
- 2017
13. Removal of submandibular calculi by surgical method and hydraulic power with curved needle: a case report
- Author
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Bok-Joo Kim, Shi-Hyun Lee, Chul-Hoon Kim, Seong-Ho Cho, Ji-Deuk Han, Jung-Han Kim, and Ji-Bong Jo
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Salivary gland pathology ,medicine.medical_specialty ,Salivary gland calculi ,Case Report ,Salivary function ,Surgical methods ,03 medical and health sciences ,0302 clinical medicine ,Sialolithotomy ,Hydraulic power ,Medicine ,Sialolithiasis ,030223 otorhinolaryngology ,Sialoliths ,Salivary Gland Calculus ,Submandibular gland ,business.industry ,030206 dentistry ,medicine.disease ,Surgery ,Conservative treatment ,medicine.anatomical_structure ,Oral Surgery ,business ,Duct (anatomy) - Abstract
Sialolithiasis, the most common salivary gland pathology, is caused by calculi in the gland itself and its duct. While patients with small sialoliths can undergo conservative treatment, those with standard-size or larger sialoliths require sialolithotomy. In the present case study, we removed two sialoliths located beneath the mucosa in the posterior and anterior regions of Wharton's duct, respectively. For the posterior calculus, we performed sialolithotomy via an intra-oral approach; thereafter, the small anterior calculus near the duct orifice was removed by hydraulic power. This method has not previously been reported. There were no complications either during the operation or postoperatively, and the salivary function of the gland remained normal.
- Published
- 2017
14. Tenting effect of dental implant on maxillary sinus lift without grafting
- Author
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Jung-Han Kim, Chul-Hoon Kim, Bok-Joo Kim, and Dong-Suk Song
- Subjects
Maxillary sinus ,Dental implant ,Maxillary sinus augmentation ,Radiography ,medicine.medical_treatment ,Dentistry ,Sinus lift ,03 medical and health sciences ,0302 clinical medicine ,Medicine ,General Dentistry ,business.industry ,030206 dentistry ,Grafting ,Tenting effect ,Apex (geometry) ,lcsh:RK1-715 ,medicine.anatomical_structure ,lcsh:Dentistry ,030220 oncology & carcinogenesis ,Bone formation ,Original Article ,Implant ,business - Abstract
Background/purpose Maxillary sinus lift without grafting is an alternative procedure that is used to lower the risk of infection and facilitate the surgical procedure. The objective of this study was to evaluate the tenting effect of the dental implant by measuring the amount and morphology of bone formation around it. Material and methods 49 implants were placed in 26 patients by maxillary sinus lift without grafting. Radiographic images were taken preoperatively and at 6 months postoperatively and used to evaluate the height of the residual bone, the width of the maxillary sinus, the amount of bone formation, and the adjacent tooth. Results The most common type of bone formed around the implant, as seen in 23 cases, was the same height as the apex of the implant; in 11 cases, it was 0–2 mm above the apex of the implant, and in 7 cases, 2 mm or more. Meanwhile, 5 cases showed defects. The tent type of bone formation, which showed more bone formation at the implant apex than in the surrounding bone, was overwhelmingly the most common. (80.4%) The amount of bone formation increased in proportion to the difference between the residual bone height and the implant length. (P Conclusion The amount of bone formation in the sinus lift without grafting increased in proportion to the length of the implants in the maxillary sinus due to the tenting effect of the implant in the maxillary sinus membrane.
- Published
- 2019
15. Cytoprotective effect of flavonoid-induced autophagy on bisphosphonate mediated cell death in osteoblast
- Author
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Bok-Joo Kim, Sang-Hun Shin, Bong-Soo Park, Su-Bin Yu, Chul-Hoon Kim, Jung-Han Kim, In-Ryoung Kim, Jae-Min Song, and Hae-Mi Kang
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0301 basic medicine ,Programmed cell death ,medicine.medical_treatment ,Biochemistry ,Bone resorption ,Metabolic bone disease ,Bone remodeling ,03 medical and health sciences ,0302 clinical medicine ,Osteogenesis ,medicine ,Autophagy ,Humans ,Molecular Biology ,Cells, Cultured ,Cell Proliferation ,Flavonoids ,Osteoblasts ,Bone Density Conservation Agents ,Cell Death ,Diphosphonates ,business.industry ,Osteoblast ,Cell Differentiation ,Cell Biology ,Bisphosphonate ,medicine.disease ,030104 developmental biology ,medicine.anatomical_structure ,Cytoprotection ,030220 oncology & carcinogenesis ,Cancer research ,Bone Remodeling ,business - Abstract
With rapid economic growth and further developments in medical science, the entry into the aging population is currently increasing, as is the number of patients with metabolic diseases, such as hypertension, hyperlipidemia, heart disease, and diabetes. The current treatments for metabolic bone diseases, which are also on the rise, cause negative side effects. Bisphosphonates, which are used to treat osteoporosis, inhibit the bone resorption ability of osteoclasts and during prolonged administration, cause bisphosphonate-related osteonecrosis of the jaw (BRONJ). Numerous studies have shown the potential role of natural plant products as flavonoids in the protection against osteoporosis and in the influence of bone remodeling. Autophagy occurs after the degradation of cytoplasmic components within the lysosome and serves as an essential cytoprotective response to pathologic stress caused by certain diseases. In the present study, we hypothesized that the cytoprotective effects of flavonoids might be related to those associated with autophagy, an essential cytoprotective response to the pathologic stress caused by certain diseases, in osteoblasts. We demonstrated the cytoprotective effect of flavonoid-induced autophagy against the toxicity of zoledronate and the induction of autophagy by flavonoids to support osteogenic transcription factors, leading to osteoblast differentiation and bone formation. Further studies are necessary to clarify the connections between autophagy and osteogenesis. It would be helpful to shed light on methodological challenges through molecular biological studies and new animal models. The findings of the current study may help to delineate the potential role of flavonoids in the treatment of metabolic bone disease.
- Published
- 2017
16. Association between the microarray-based CYP2C19 genotyping assay and the platelet function test in cardiovascular patients receiving clopidogrel
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Bok-Joo Kim, Kyung-Eun Kim, Kwang-Sook Woo, Jae-Lim Choi, Jin-Yeong Han, June-Hyung Kim, Jeong-Man Kim, and Myo-Jing Kim
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Blood Platelets ,Oncology ,medicine.medical_specialty ,Acute coronary syndrome ,Ticlopidine ,Genotype ,Microarray ,Clinical Biochemistry ,Gene Expression ,CYP2C19 ,Biology ,Pharmacology ,Percutaneous Coronary Intervention ,Asian People ,Internal medicine ,medicine ,Humans ,Platelet ,Acute Coronary Syndrome ,Genotyping ,Alleles ,Polymorphism, Genetic ,Aspirin ,Biochemistry (medical) ,Hematology ,General Medicine ,Microarray Analysis ,Clopidogrel ,medicine.disease ,Receptors, Purinergic P2Y12 ,Adenosine Diphosphate ,Cytochrome P-450 CYP2C19 ,Isoenzymes ,Platelet aggregation inhibitor ,Platelet Aggregation Inhibitors ,medicine.drug - Published
- 2014
17. Treatment of Keratocystic Odontogenic Tumors in Nevoid Basal Cell Carcinoma Syndrome
- Author
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Hyun-Ho Ryu, Seok-Hwan Ryu, Taek-Woo Kim, Dong-Yoon Shin, Chul-Hoon Kim, Jong-Bum Lee, and Bok-Joo Kim
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Pathology ,medicine.medical_specialty ,business.industry ,Basal Cell Nevus Syndrome ,Medicine ,Nevoid basal-cell carcinoma syndrome ,business ,medicine.disease ,Odontogenic - Published
- 2014
18. Evaluation of the leukocyte differential on a new automated flow cytometry hematology analyzer
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Bok-Joo Kim, Jin-Yeong Han, Jeong-Man Kim, and Kwang-Sook Woo
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medicine.medical_specialty ,Acute leukemia ,Pathology ,Hematology ,medicine.diagnostic_test ,Biochemistry (medical) ,Clinical Biochemistry ,Wbc differential ,General Medicine ,Biology ,Flow cytometry ,Differential wbc count ,medicine.anatomical_structure ,Hematology analyzer ,hemic and lymphatic diseases ,White blood cell ,Internal medicine ,medicine ,B cell - Abstract
Summary Introduction: The Hematoflow (Beckman Coulter, USA) is a new automated hematology analyzer, which provides a 16-part white blood cell count (WBC) differential. Methods: We evaluated the differential WBC count performance of the Hematoflow. 101 blood samples from patients were selected for comparison analysis. Results: The methodological comparison of the WBC differential parameters of neutrophils, lymphocytes, monocytes and eosinophils showed good correlations among 4 different analyses. More than 1% of blast cells were counted in 30 of 101 samples. A good correlation for blast cell counts obtained by Hematoflow was found with the reference manual method (r=0.9637, P 0.0001). For blast B, Hematoflow shows good correlation with reference method results but did not identify blast T. Conclusions: These results demonstrate that the Hematoflow has a comparable performance with the Sysmex XE-2100 and indicate that B cell lineage ALL can be identified by the use of the Hematoflow in an initial evaluation of acute leukemia.
- Published
- 2012
19. A comparative study of the effectiveness of sinus bone grafting with recombinant human bone morphogenetic protein 2–coated tricalcium phosphate and platelet-rich fibrin–mixed tricalcium phosphate in rabbits
- Author
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Hyun-Su Baek, Bok-Joo Kim, Sang-Hun Shin, Dae-Seok Hwang, Jin-Sook Jeong, In-Kyo Chung, Chul-Hun Kim, and Taek-Kyun Kwon
- Subjects
Blood Platelets ,Calcium Phosphates ,Sinus Floor Augmentation ,Pathology ,medicine.medical_specialty ,Bone Regeneration ,medicine.medical_treatment ,Bone Morphogenetic Protein 2 ,Dentistry ,Bone healing ,Bone grafting ,Bone morphogenetic protein 2 ,Pathology and Forensic Medicine ,Masson's trichrome stain ,Coated Materials, Biocompatible ,Transforming Growth Factor beta ,Animals ,Medicine ,Radiology, Nuclear Medicine and imaging ,Dentistry (miscellaneous) ,Bone regeneration ,Drug Carriers ,Fibrin ,Bone decalcification ,business.industry ,Recombinant Proteins ,Platelet-rich fibrin ,Female ,Surgery ,Rabbits ,Oral Surgery ,business - Abstract
Objectives The objective of this histologic study was to evaluate platelet-rich fibrin (PRF)–mixed tricalcium phosphate (TCP) and recombinant human bone morphogenic protein 2 (rhBMP-2)–coated TCP in their potential to enhance bone regeneration in sinus elevation in rabbits as well as in their inflammatory features. Study Design Bilateral round-shaped defects (diameter 8.0 mm) were formed in the maxillary anterior sinus walls of 36 New Zealand white rabbits. The defects were grafted with TCP only (control group), with rhBMP-2–coated TCP (experimental group A) and with PRF-mixed TCP (experimental group B). Each group included 12 rabbits. The animals were killed at 3 days, 1 week, 2 weeks, 4 weeks, 6 weeks, and 8 weeks. The specimens underwent decalcification and were stained for histologic analysis. Results There were no significant differences in inflammatory features among the groups at 3 days or the first week after operation. In a histomorphometric analysis, the new bone formation ratio showed significant differentiation between groups A and B. The TCP-only control group showed a relatively lower bone formation ratio rather than the experimental groups. The PRF-mixed TCP group showed a larger bone formation area, compared with both the control group and group A. Conclusions In the results of the histologic evaluation (hematoxylin-eosin, Masson trichrome stain), the experimental groups A and B showed rapid bone formation, remodeling, and calcification in the second week. Moreover, there was a significant difference between those experimental groups and the control group in the new bone formation area at the fourth, sixth, and eighth weeks. The PRF-mixed TCP showed more rapid bone healing than the rhBMP-2-coated TCP or the TCP-only control.
- Published
- 2012
20. The Effects of Kaempferol-Inhibited Autophagy on Osteoclast Formation
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Bok-Joo Kim, Sang-Hun Shin, In-Ryoung Kim, Hae-Mi Kang, Bong-Soo Park, Jung-Han Kim, Chul-Hoon Kim, and Chang-Ju Kim
- Subjects
0301 basic medicine ,autophagy ,Cellular differentiation ,Osteoclasts ,Apoptosis ,Article ,Catalysis ,Inorganic Chemistry ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,Western blot ,Osteogenesis ,Osteoclast ,Sequestosome-1 Protein ,medicine ,Animals ,MTT assay ,RNA, Messenger ,Bone Resorption ,Kaempferols ,Physical and Theoretical Chemistry ,Molecular Biology ,bone remodeling ,Spectroscopy ,osteoclast differentiation ,medicine.diagnostic_test ,biology ,Chemistry ,RANK Ligand ,Organic Chemistry ,Autophagy ,Acid phosphatase ,bisphosphonate-related osteonecrosis of the jaw (BRONJ) ,Cell Differentiation ,osteoporosis ,flavonoids ,General Medicine ,Computer Science Applications ,Cell biology ,RAW 264.7 Cells ,030104 developmental biology ,medicine.anatomical_structure ,Gene Expression Regulation ,Proteolysis ,biology.protein ,Kaempferol - Abstract
Kaempferol, a flavonoid compound, is derived from the rhizome of Kaempferia galanga L., which is used in traditional medicine in Asia. Autophagy has pleiotropic functions that are involved in cell growth, survival, nutrient supply under starvation, defense against pathogens, and antigen presentation. There are many studies dealing with the inhibitory effects of natural flavonoids in bone resorption. However, no studies have explained the relationship between the autophagic and inhibitory processes of osteoclastogenesis by natural flavonoids. The present study was undertaken to investigate the inhibitory effects of osteoclastogenesis through the autophagy inhibition process stimulated by kaempferol in murin macrophage (RAW 264.7) cells. The cytotoxic effect of Kaempferol was investigated by MTT assay. The osteoclast differentiation and autophagic process were confirmed via tartrate-resistant acid phosphatase (TRAP) staining, pit formation assay, western blot, and real-time PCR. Kaempferol controlled the expression of autophagy-related factors and in particular, it strongly inhibited the expression of p62/SQSTM1. In the western blot and real time-PCR analysis, when autophagy was suppressed with the application of 3-Methyladenine (3-MA) only, osteoclast and apoptosis related factors were not significantly affected. However, we found that after cells were treated with kaempferol, these factors inhibited autophagy and activated apoptosis. Therefore, we presume that kaempferol-inhibited autophagy activated apoptosis by degradation of p62/SQSTM1. Further study of the p62/SQSTM1 gene as a target in the autophagy mechanism, may help to delineate the potential role of kaempferol in the treatment of bone metabolism disorders.
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- 2018
21. Temporomandibular joint disorder from skull-base osteomyelitis: a case report
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Suck Chul Lee, Bok Joo Kim, Jae Hyung Kim, and Chul-Hoon Kim
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medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Osteomyelitis ,medicine.medical_treatment ,Dentistry ,Arthrocentesis ,Physical examination ,Case Report ,medicine.disease ,Condyle ,Surgery ,Otitis ,medicine.anatomical_structure ,stomatognathic system ,Skull-base osteomyelitis ,Malignant external otitis ,Arthrocentesis with lavage ,medicine ,Temporomandibular Joint Disorder ,Ear canal ,medicine.symptom ,business ,Rare disease - Abstract
Skull-base osteomyelitis is a rare disease affecting the medulla of the temporal, sphenoid, and occipital bones. In general, it occurs due to external ear canal infections caused by malignant external otitis. Skull-base osteomyelitis usually affects elderly diabetic patients. The patient, a 58-year-old man, was referred for evaluation and management of the left jaw. Clinical examination of the patient revealed pain in the left jaw and mouth-opening deflection to the left. The maximum active mouth opening was measured to about 27 mm. Panoramic, CT, and CBCT revealed bone resorption patterns in the left condyle. Through control of diabetes, continued pharmacological treatment, arthrocentesis, and occlusal stabilization appliance therapy were carried out. The extent of active mouth opening was increased to 45 mm, and pain in the left jaw joint was alleviated. This was a case wherein complications caused by failure to control diabetes induced skull-base osteomyelitis. There is a need for continued discussion about the advantages and disadvantages of arthrocentesis with lavage for patients with skull-base osteomyelitis and other treatment options.
- Published
- 2015
22. Reconstruction of extensive jaw defects induced by keratocystic odontogenic tumor via patient-customized devices
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Bok-Joo Kim, Seok-Yong Park, Chul-Hoon Kim, and Young-Jo Shin
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medicine.medical_specialty ,Decompression ,business.industry ,Fistula ,medicine.medical_treatment ,Enucleation ,Mandible ,Case Report ,medicine.disease ,Marsupialization ,Surgery ,Maxilla ,medicine ,Keratocystic Odontogenic Tumor ,Cyst ,business - Abstract
Keratocystic odontogenic tumors can occur in any area of the maxilla or mandible. According to their size, location, and relations with surrounding structures, they are treated by cyst enucleation or enucleation after either marsupialization or decompression. Enucleation is performed when cysts are not large and when only minor damage to adjacent anatomical structures is expected. Although marsupialization and decompression follow the same basic bone-regeneration principle, which is to say, by reducing the pressure within the cyst, the former leaves a large defect after healing due to the large fistula necessary to induce the conversion of the cyst-lining epithelia to oral epithelia; the latter leaves only a relatively small defect, because of the continuous washing carried out by means of a tube inserted into a small hole in the cyst. In the latter case too, a decompressor appropriate for the focal position is required, owing to the importance of maintaining the device and controlling for oral hygiene. We report herein decompression treatment with a patient-customized device for an extensive cyst in the anterior region of the mandible.
- Published
- 2015
23. Facial asymmetry: a case report of localized linear scleroderma patient with muscular strain and spasm
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Bok-Joo Kim, Suck-Chul Lee, Chul-Hoon Kim, and Jae-Hyung Kim
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medicine.medical_specialty ,Parry-Romberg syndrome (PRS) ,business.industry ,medicine.medical_treatment ,Orthognathic surgery ,Soft tissue ,Case Report ,medicine.disease ,Surgery ,Scleroderma ,Plastic surgery ,stomatognathic diseases ,Atrophy ,medicine ,Linear Scleroderma ,medicine.symptom ,business ,Localized Scleroderma ,Facial asymmetry ,muscle spasm ,Soft-tissue facial asymmetry ,Facial symmetry - Abstract
Facial asymmetry is found in patients with or without cosmetic facial alterations. Some patients have facial asymmetry that manifests underlying skeletal problems, while others have only limited soft-tissue facial asymmetry. Orthognathic surgery brings about a dermatic change, as soft tissue covers underlying bones. Limited soft-tissue asymmetry, meanwhile, is difficult to correct. The treatment modalities for the creation or restoration of an esthetically pleasing appearance were autogenous fat grafts, cartilage graft, and silicon injections. A young female patient had right-side facial asymmetry. The clinical assessment involved visual inspection of the face and palpation to differentiate soft tissue and bone. Although the extra-oral examination found facial asymmetry with skin atrophy, the radiographic findings revealed no mandibular atrophy or deviation. She was diagnosed as localized scleroderma with muscle spasm. In conclusion, facial asymmetry patients with skeletal asymmetry can be esthetically satisfied by orthognathic surgery; however, facial atrophy patients with skin or subdermal tissue contraction need treatment by cosmetic dermatological surgery and orthodontic correction.
- Published
- 2015
24. Use of artificial palate for improving facial support in the fabrication of a maxillary obturator: A case report
- Author
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Bok-Joo Kim, Hee-Kyoung Yoon, Hee-Seong Hwang, Chul-Hoon Kim, and Jung-Han Kim
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Orthodontics ,03 medical and health sciences ,0302 clinical medicine ,business.industry ,Artificial palate ,0206 medical engineering ,Maxillary obturator ,Medicine ,Dentistry ,030206 dentistry ,02 engineering and technology ,business ,020601 biomedical engineering - Published
- 2017
25. Lateral approach for maxillary sinus membrane elevation without bone materials in maxillary mucous retention cyst with immediate or delayed implant rehabilitation: case reports
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Bok-Joo Kim, Seong-Gwang Kim, Seong-Ho Cho, Ji-Deuk Han, Kuk-Won Jang, Jung-Han Kim, and Chul-Hun Kim
- Subjects
Sinus Floor Augmentation ,medicine.medical_specialty ,Maxillary sinus ,Sinus lift ,Dentistry ,Case Report ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Local anesthesia ,Cyst ,Sinus (anatomy) ,Cysts ,Mucous retention cyst ,business.industry ,Dental implants ,030206 dentistry ,medicine.disease ,Surgery ,medicine.anatomical_structure ,Implant ,Oral Surgery ,business ,Without bone graft ,030217 neurology & neurosurgery ,Sinus floor augmentation - Abstract
This case series study demonstrates the possibility of successful implant rehabilitation without bone augmentation in the atrophic posterior maxilla with cystic lesion in the sinus. Sinus lift without bone graft using the lateral approach was performed. In one patient, the cyst was aspirated and simultaneous implantation under local anesthesia was performed, whereas the other cyst was removed under general anesthesia, and the sinus membrane was elevated in a second process, followed by implantation. In both cases, tapered 11.5-mm-long implants were utilized. With all of the implants, good stability and appropriate bone height were achieved. The mean bone level gain was 5.73 mm; adequate bone augmentation around the implants was shown, the sinus floor was moved apically, and the cyst was no longer radiologically detected. Completion of all of the treatments required an average of 12.5 months. The present study showed that sufficient bone formation and stable implantation in a maxilla of insufficient bone volume are possible through sinus lift without bone materials. The results serve to demonstrate, moreover, that surgical treatment of mucous retention cyst can facilitate rehabilitation. These techniques can reduce the risk of complications related to bone grafts, save money, and successfully treat antral cyst.
- Published
- 2017
26. The usefulness of cephalometric measurement as a diagnostic tool for obstructive sleep apnea syndrome: a retrospective study
- Author
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Bok-Joo Kim, Sang-Ho Kim, Myoung Soo Kim, Soo-Kweon Koo, Hyun-Ho Ryu, Woo-Yong Bae, Sang-Myung Cheon, and Chul-Hoon Kim
- Subjects
Adult ,Male ,Adolescent ,Cephalometry ,Polysomnography ,Dentistry ,Severity of Illness Index ,Pathology and Forensic Medicine ,Sleep Apnea Syndromes ,stomatognathic system ,Tongue ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Dentistry (miscellaneous) ,Craniofacial ,Aged ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Hyoid bone ,Apnea ,Craniometry ,Middle Aged ,medicine.disease ,nervous system diseases ,respiratory tract diseases ,Obstructive sleep apnea ,Radiography ,medicine.anatomical_structure ,Cross-Sectional Studies ,Surgery ,Female ,Oral Surgery ,medicine.symptom ,business ,Hypopnea - Abstract
Objective Obstructive sleep apnea syndrome (OSAS) is a disorder characterized by apnea and hypopnea maintained for over 10 seconds and occurring at least 5 times per hour, with at least 30 episodes during 7 hours of nocturnal sleep. The most important pathophysiology in OSAS is the obstruction of the upper airway during sleep. The aim of this study was to identify the correlations between lateral cephalometric parameters, which seemed to be related to OSAS severities, and polysomnography (PSG) indices and to thus determine the cephalometric parameters reflecting OSAS severity. Patients and Methods A total of 140 participants (122 males, 18 females) were evaluated by lateral cephalography and PSG. A total of 29 measurements (24 distances and 5 angles) were made on lateral cephalography. Cephalometric and PSG parameters were evaluated statistically to select and validate the cephalometric parameters reflecting OSAS severity. Result OSAS has a significant relationship with the anatomic deformities of craniofacial and soft tissues. Lateral cephalometry revealed that patients with OSAS have a significant vertical airway length, a regrognathic mandible, a thick uvula, a large tongue, and a long mid-face length. The position of the hyoid bone had a tendency to displace inferiorly and/or posteriorly. Using the discriminant variable combination, including tongue base-posterior nasal spine (T1-PNS), sella–nasion–B point angle (SNB), maximum uvula thickness (Max U), tongue base-tongue tip (T1-TT), and nasion-anterior nasal spine (N-ANS), 102 of 140 (72.9%) patients were correctly assigned to the normal-to-mild and moderate-to-severe apnea–hypopnea index (AHI) groups. Conclusions Lateral cephalometric radiography may be an accessible and suitable tool for evaluation of craniofacial and soft tissue deformities in their correlations with OSAS severity. Further research on the cephalometric parameters reflecting OSAS severity is needed.
- Published
- 2014
27. Full-mouth rehabilitation by immediate implantation combined with orthognathic surgery: a clinical report
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Bok-Joo Kim, Hee-Seong Hwang, Chul-Hoon Kim, Ji-Ye Heo, and Hye-Rim Ahn
- Subjects
0301 basic medicine ,medicine.medical_specialty ,030102 biochemistry & molecular biology ,business.industry ,medicine.medical_treatment ,Orthognathic surgery ,Dentistry ,030206 dentistry ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,Clinical report ,Full mouth rehabilitation ,medicine ,business - Published
- 2016
28. Effect of simultaneous therapy of arthrocentesis and occlusal splints on temporomandibular disorders: anterior disc displacement without reduction
- Author
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Bok-Joo Kim, Hyun-Su Baek, Hee-Chul Kim, Hyo-Geun Kim, Chul-Hoon Kim, Dong-Suk Song, Sang-Hoon Shin, Myung-Soo Kim, Sung-Hee Jung, and Hye Sung Lee
- Subjects
Orthodontics ,Temporomandibular joint disorders ,business.industry ,Visual analogue scale ,medicine.medical_treatment ,Clinical Analysis ,Dentistry ,Arthrocentesis ,Retrospective cohort study ,Occlusal splint ,Occlusal Splints ,body regions ,Disc displacement ,medicine ,Oral and maxillofacial surgery ,Surgery ,Oral Surgery ,business ,Splint (medicine) ,Reduction (orthopedic surgery) - Abstract
J Korean Assoc Oral Maxillofac Surg 2013;39:14-20) Objectives: This study sought to evaluate the effect of simultaneous application of arthrocentesis and occlusal splint. Materials and Methods: A retrospective study of 43 patients (3 males, 40 females) whose symptoms had improved was conducted at the Department of Oral and Maxillofacial Surgery, Dong-A University Hospital between 2008 and 2010. Subjects were divided into three groups: Group A (17 patients with arthrocentesis and occlusal splints simultaneously applied), Group B (13 patients whose symptoms did not improve with occlusal splints, undergoing arthrocentesis after occlusal splint use for 8 weeks), and Group C (13 patients that only used occlusal splints). We compared these groups in maximum comfortable opening (MCO) and the visual analogue scale of pain and noise. Follow-up was performed at 1 week, 1 month, 3 months, and 6 months. Results: The improvement of symptoms was noted in all three groups, but Group A had a quicker improvement than the other groups, in terms of pain reduction and MCO increases. Conclusion: The simultaneous application of arthrocentesis and occlusal splints can reduce patient discomfort more quickly.
- Published
- 2012
29. Complication rates in patients using absorbable collagen sponges in third molar extraction sockets: a retrospective study
- Author
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Bok-Joo Kim, Hoon Cho, Hwi-Dong Jung, Young-Soo Jung, and Chul-Hoon Kim
- Subjects
Molar ,medicine.medical_specialty ,Tooth extraction ,business.industry ,Incidence (epidemiology) ,Dentistry ,Postoperative complication ,Retrospective cohort study ,medicine.disease ,Collagen sponge ,Surgery ,Postoperative complications ,Hematoma ,Third molar ,medicine ,Oral and maxillofacial surgery ,Original Article ,Oral Surgery ,Osteitis ,Complication ,business - Abstract
Objectives The purpose of this study is to retrospectively evaluate the postoperative complication rates for absorbable type-I collagen sponge (Ateloplug; Bioland) use in third molar extraction. Materials and methods From January to August 2013, 2,697 total patients undergoing third molar extraction and type-I collagen sponge application in the Department of Oral and Maxillofacial Surgery at Yonsei University Dental Hospital (1,163 patients) and Dong-A University Hospital (1,534 patients) were evaluated in a retrospective study using their operation and medical records. Results A total of 3,869 third molars in 2,697 patients were extracted and the extraction sockets packed with type-I collagen sponges to prevent postoperative complications. As a result, the overall complication rate was 4.52%, with 3.00% experiencing surgical site infection (SSI), 1.14% showing alveolar osteitis, and 0.39% experiencing hematoma. Of the total number of complications, SSI accounted for more than a half at 66.29%. Conclusion Compared to previous studies, this study showed a relatively low incidence of complications. The use of type-I collagen sponges is recommended for the prevention of complications after third molar extraction.
- Published
- 2015
30. The role of kaempferol-induced autophagy on differentiation and mineralization of osteoblastic MC3T3-E1 cells.
- Author
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In-Ryoung Kim, Seong-Eon Kim, Hyun-Su Baek, Bok-Joo Kim, Chul-Hoon Kim, In-Kyo Chung, Bong-Soo Park, and Sang-Hun Shin
- Subjects
AUTOPHAGY ,ALKALINE phosphatase ,ANIMAL experimentation ,BONE resorption ,ASIAN medicine ,MOLECULAR structure ,POLYMERASE chain reaction ,RABBITS ,RESEARCH funding ,STAINS & staining (Microscopy) ,STATISTICS ,WESTERN immunoblotting ,DATA analysis ,REVERSE transcriptase polymerase chain reaction ,DATA analysis software ,OSTEOBLASTS ,FLAVONOLS ,DESCRIPTIVE statistics ,IN vitro studies ,ONE-way analysis of variance - Abstract
Background: Kaempferol, a kind of flavonol, has been reported to possess various osteogenic biological activities, such as inhibiting bone resorption of osteoclasts and promoting the differentiation and mineralization of preosteoblasts. However, the precise cellular mechanism of action of kaempferol in osteogenesis is elusive. Autophagy is a major intracellular degradation system, which plays an important role in cell growth, survival, differentiation and homeostasis in mammals. Recent studies showed that autophagy appeared to be involved in the degradation of osteoclasts, osteoblasts and osteocytes, potentially pointing to a new pathogenic mechanism of bone homeostasis and bone marrow disease. The potential correlation between autophagy, osteogenesis and flavonoids is unclear. Methods: The present study verified that kaempferol promoted osteogenic differentiation and mineralization and that it elevated osteogenic gene expression based on alkaline phosphatase (ALP) activity, alizarin red staining and quantitative PCR. And then we found that kaempferol induced autophagy by acridine orange (AO) and monodansylcadaverine (MDC) staining and autophagy-related protein expression. The correlation between kaempferol-induced autophagy and the osteogenic process was confirmed by the autophagy inhibitor 3-methyladenine (3-MA). Results: Kaempferol promoted the proliferation, differentiation and mineralization of osteoblasts at a concentration of 10 µM. Kaempferol showed cytotoxic properties at concentrations above 50 µM. Concentrations above 10 µM decreased ALP activity, whereas those up to 10 µM increased ALP activity. Kaempferol at concentrations up to 10 µM also increased the expression of the osteoblast- activated factors RUNX-2, osterix, BMP-2 and collagen I according to RT-PCR analyses. 10 µM or less, the higher of the concentration and over time, kaempferol promoted the activity of osteoblasts. Kaempferol induced autophagy. It also increased the expression of the autophagy-related factors beclin-1, SQSTM1/p62 and the conversion of LC3-II from LC3-I. The application of 3-MA decreased the activity of ALP and the autophagy induced by kaempferol. In the RT-PCR analysis, the expression of RUNX-2, osterix, BMP-2 and collagen I was decreased. Conclusion: The present study showed that kaempferol stimulated the osteogenic differentiation of cultured osteoblasts by inducing autophagy. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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31. Epithelial-myoepithelial carcinoma on the superficial lobe of the parotid gland: a case report
- Author
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Sun Mi Jin, Dong Yoon Shin, Hyun Ho Ryu, Bok Joo Kim, Chul-Hoon Kim, Hie Sung Hwang, and Seok Hwan Ryu
- Subjects
Pathology ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,medicine.disease ,Epithelial-myoepithelial carcinoma ,Parotid gland ,Radiation therapy ,Pleomorphic adenoma ,Lesion ,stomatognathic diseases ,medicine.anatomical_structure ,stomatognathic system ,Superficial Parotidectomy ,Carcinoma ,medicine ,Malignant Salivary Gland Neoplasm ,Surgery ,Radiology ,Oral Surgery ,medicine.symptom ,business - Abstract
Epithelial-myoepithelial carcinoma (EMC) is a low-grade malignant salivary gland neoplasm that was first described in 1972. EMC occurs in the older age group, there is a female predilection and mainly involves the parotid gland. Most authors recommend superficial parotidectomy as a treatment for low-grade malignant tumor in the superficial lobe of parotid gland. The treatment of epithelial-myoepithelial tumors typically includes surgical excision aimed at achieving a R0 resection. This paper reports a case of EMC of the parotid gland treated only by a conservational surgical excision. The lesion was exposed by the retromandibular approach and detached. After the parotid gland envelop was exposed, the mass was observed and was easy to remove due to capsulation. The preoperative diagnosis was a pleomorphic adenoma on the left parotid gland. The tumor was removed surgically with a conservative extracapsular dissection. The postoperative diagnosis was EMC, so superficial parotidectomy or radiation therapy was considered. Nevertheless, the patient was observed and no additional treatment was attempted because the patient was old and a successfully excision of the tumor had been achieved.
- Published
- 2011
32. Effect of adipose-derived stem cells on bone healing on titanium implant in tibia of diabetes mellitus induced rats
- Author
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Bok-Joo Kim, In-Kyo Jung, Uk-Kyu Kim, Chul-Hoon Kim, Young-Sup Hwang, Min-Gu Kim, Sang-Hun Shin, Jung-Han Kim, Jin-Woo Kim, and Eu-Gene Jung
- Subjects
Pathology ,medicine.medical_specialty ,Titanium implant ,business.industry ,Adipose tissue ,Bone healing ,medicine.disease ,Diabetes mellitus ,medicine ,Surgery ,Tibia ,Oral Surgery ,Stem cell ,business - Published
- 2010
33. Lipoma on superficial lobe of the parotid gland: case report
- Author
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Jin Woo Song, Bok Joo Kim, Eu Gene Jung, Jung Han Kim, Min Gu Kim, and Chul-Hoon Kim
- Subjects
business.industry ,Enucleation ,Anatomy ,Lipoma ,medicine.disease ,Facial nerve ,Lobe ,Parotid gland ,Benign tumor ,body regions ,Lesion ,stomatognathic diseases ,medicine.anatomical_structure ,stomatognathic system ,otorhinolaryngologic diseases ,medicine ,Abdomen ,Surgery ,Oral Surgery ,medicine.symptom ,business - Abstract
J Korean Assoc Oral Maxillofac Surg 2010;36:438-40) A lipoma is a benign tumor of matured adipose tissue that usually occurs at the shoulder, back, and abdomen. 13% of lipomas occ ur in the head and neck area. However, the incidence of lipoma in the parotid gland is very low, approximately 2.5%. A conservational surgical exc ision is recommended in cases of lipoma of the parotid gland, with only 1-2% of lipomas recurring. We report a case of a lipoma in the parotid gland that was removed by conservational surgical excision. The lesion was exposed by the pre-auricular approach and the tissue was detached. After the parotid gland envelop was exposed, a yellowish mass is observed that was easy t o remove due to cap- sulation. Most authors recommend a surgical excision of the superficial lobe of the parotid gland as the treatment for a lipoma in the pa rotid gland. However, enucleation only may be a sufficient treatment when a lipoma occurs in the superficial lobe or around the parotid gland. A pati dectomy is not needed when a lipoma is located at the superficial lobe of the parotid gland, and a conservational surgical excision is suitable. Ther efore, a clinical diagnosis is important for reducing the damage to the facial nerve.
- Published
- 2010
34. Study about the relationship between the amount of posterior impaction and the change of occlusal plane angle and incisor inclination in Le Fort I osteotomy
- Author
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Jung Han Kim, Min Gu Kim, Bok Joo Kim, and Chul-Hoon Kim
- Subjects
Orthodontics ,Impaction ,business.industry ,medicine.medical_treatment ,Orthognathic surgery ,Dentistry ,medicine.disease ,Osteotomy ,Mandibular first molar ,medicine.anatomical_structure ,Incisor ,Maxilla ,Occlusal plane ,medicine ,Surgery ,Oral Surgery ,Malocclusion ,business - Abstract
Introduction: In the management of dentofacial deformities, variable movement of the maxilla can be made possible by a Le Fort I osteotomy. Posterior impaction of the maxilla necessary for rotation of the maxillomandibular complex enhances the functions and esthetic results. In cases of posterior impaction of the maxilla, an increase in the figure of the occlusal plane angle and incisor inclination can occur. Th is study reports the relationship between the amount of posterior impaction and the change in the occlusal plane angle and incisor inclination in a Le F ort I osteotomy by preoperative and postoperative lateral cephalograms. Materials and Methods: Twenty patients who had undergone orthognathic surgery in Dong-A University Medical Center participated in this study. Lateral cephalometrics, within 3 weeks prior to surgery and 3 days after surgery, were used for analysis. Pre and postoperative measurements of the occlusal plane angle and incisal inclination based on the Frankfort horizontal (FH) plane were performed. X and Y were defined as the amount of vertical change in the upper incisor tip and the amount of vertical change in the upper first molar mesial cup tip through the ope ration. The amount of final posterior maxillary impaction was determined by subtracting Y from X, which is the difference in vertical height. Accordi ng to the amount of posterior maxillary impaction, the change in the occlusal plane angle and incisal inclination was measured. Results: The average posterior maxillary impaction was 2.91 mm and the average change in the occlusal plane angle and incisal inclinatio n was 6.54�after surgery. As a result, each mm of posterior maxillary impaction changed the occlusal plane angle and incisal inclination b y 2.25� . Statistically, there was high significance. Two cases were observed: one with the same amount of posterior maxillary impaction performed on both the right and left showing 2.20� , and the other with a different amount of posterior maxillary impaction performed showing 2.35 � . In this case, there was no significance difference between the two cases. Conclusion: Each mm of posterior maxillary impaction changes the occlusal plane angle and incisal inclination by an average of 2.25 � . In posterior maxillary impaction, there was no significant difference in the amount of change in the occlusal plane angle and incisal inclin ation regardless of whether there was an equal amount of posterior maxillary impaction on both sides. This study is expected to help in the presurg ical orthodontic preparation and presurgical treatment planning.
- Published
- 2010
35. The role of kaempferol-induced autophagy on differentiation and mineralization of osteoblastic MC3T3-E1 cells
- Author
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Chul-Hoon Kim, Bok-Joo Kim, Hyun-Su Baek, In-Ryoung Kim, Bong-Soo Park, In-Kyo Chung, Seong-Eon Kim, and Sang-Hun Shin
- Subjects
0301 basic medicine ,medicine.medical_specialty ,Biology ,Bone resorption ,Cell Line ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Osteogenesis ,Internal medicine ,Gene expression ,Autophagy ,medicine ,Animals ,Kaempferols ,Kaemferol ,Flavonoids ,Adenine ,Acridine orange ,Cell Differentiation ,Osteoblast ,General Medicine ,Cell biology ,030104 developmental biology ,Endocrinology ,medicine.anatomical_structure ,chemistry ,Complementary and alternative medicine ,030220 oncology & carcinogenesis ,Alkaline phosphatase ,Kaempferol ,Intracellular ,Research Article - Abstract
Background Kaempferol, a kind of flavonol, has been reported to possess various osteogenic biological activities, such as inhibiting bone resorption of osteoclasts and promoting the differentiation and mineralization of preosteoblasts. However, the precise cellular mechanism of action of kaempferol in osteogenesis is elusive. Autophagy is a major intracellular degradation system, which plays an important role in cell growth, survival, differentiation and homeostasis in mammals. Recent studies showed that autophagy appeared to be involved in the degradation of osteoclasts, osteoblasts and osteocytes, potentially pointing to a new pathogenic mechanism of bone homeostasis and bone marrow disease. The potential correlation between autophagy, osteogenesis and flavonoids is unclear. Methods The present study verified that kaempferol promoted osteogenic differentiation and mineralization and that it elevated osteogenic gene expression based on alkaline phosphatase (ALP) activity, alizarin red staining and quantitative PCR. And then we found that kaempferol induced autophagy by acridine orange (AO) and monodansylcadaverine (MDC) staining and autophagy-related protein expression. The correlation between kaempferol-induced autophagy and the osteogenic process was confirmed by the autophagy inhibitor 3-methyladenine (3-MA). Results Kaempferol promoted the proliferation, differentiation and mineralization of osteoblasts at a concentration of 10 μM. Kaempferol showed cytotoxic properties at concentrations above 50 μM. Concentrations above 10 μM decreased ALP activity, whereas those up to 10 μM increased ALP activity. Kaempferol at concentrations up to 10 μM also increased the expression of the osteoblast- activated factors RUNX-2, osterix, BMP-2 and collagen I according to RT-PCR analyses. 10 μM or less, the higher of the concentration and over time, kaempferol promoted the activity of osteoblasts. Kaempferol induced autophagy. It also increased the expression of the autophagy-related factors beclin-1, SQSTM1/p62 and the conversion of LC3-II from LC3-I. The application of 3-MA decreased the activity of ALP and the autophagy induced by kaempferol. In the RT-PCR analysis, the expression of RUNX-2, osterix, BMP-2 and collagen I was decreased. Conclusion The present study showed that kaempferol stimulated the osteogenic differentiation of cultured osteoblasts by inducing autophagy.
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36. Comparison of recombinant human bone morphogenetic protein-2-infused absorbable collagen sponge, recombinant human bone morphogenetic protein-2-coated tricalcium phosphate, and platelet-rich fibrin-mixed tricalcium phosphate for sinus augmentation in rabbits
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Chul-Hun Kim, Mi-Ha Ju, and Bok-Joo Kim
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Dentistry ,RK1-715 - Abstract
Background/purpose: Numerous grafting materials have been used in the bone regeneration of maxillary sinus to obtain a sufficient amount of new bone in implant dentistry. The objective of this study was to compare the potentials of Type I absorbable collagen sponge (ACS) impregnated with recombinant human bone morphogenetic protein (rhBMP)-2, rhBMP-2-coated tricalcium phosphate (TCP), platelet-rich fibrin-mixed TCP for enhancing bone regeneration in sinus augmentation in rabbits. Materials and methods: The sinus defects were grafted with rhBMP-2+ACS (Group A), rhBMP-2-coated TCP (Group B), and platelet-rich fibrin-mixed TCP (Group C). The specimens underwent decalcification, and were stained for histomorphometric analysis. Results: There were no significant differences in inflammatory features among the groups 1-week postoperation. In a histomorphometric analysis, the new bone formation ratio showed significant differences between groups at 2 weeks. rhBMP-2+ACS showed a larger and more rapid bone formation area at 2 weeks than those of Groups B and C. Conclusion: Our histological evaluation demonstrates that Type I ACS can be used as a carrier of rhBMP-2, and rhBMP-2+ACS showed rapid bone formation, remodeling, and calcification at Week 2 in rabbit. Keywords: absorbable collagen sponge, BMP-2, PRF, sinus augmentation, TCP
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- 2017
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