19 results on '"Brouns JJ"'
Search Results
2. Stability, complications, implant survival, and patient satisfaction after Le Fort I osteotomy and interposed bone grafts: follow-up of 5-18 years.
- Author
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Soehardi A, Meijer GJ, Hoppenreijs TJ, Brouns JJ, de Koning M, and Stoelinga PJ
- Subjects
- Aged, Aged, 80 and over, Female, Follow-Up Studies, Humans, Ilium transplantation, Male, Middle Aged, Postoperative Complications, Radiography, Panoramic, Retrospective Studies, Alveolar Ridge Augmentation methods, Bone Transplantation methods, Dental Implantation, Endosseous, Dental Implants, Jaw, Edentulous surgery, Maxilla surgery, Osteotomy, Le Fort, Patient Satisfaction
- Abstract
The results of a retrospective study on 24 patients who underwent a Le Fort I osteotomy to improve the condition for implant insertion are presented. They all had an edentulous maxilla, Cawood and Howell class VI. Bone grafts were taken from the anterior or posterior iliac crest and implants were placed between 3 and 6 months after the osteotomy. The follow-up period ranged from 5 to 18 years. Initial complications occurred in seven patients in whom small bony defects were present at the time of the implant insertion procedure. The position of the advanced and downward grafted maxilla remained stable over the years. A total of 135 implants were initially inserted, of which 34 failed over the years. Ten implants were inserted to compensate for lost ones, of which only one failed. The screw implants tended to do better than the cylindrical implants. Two patients lost all implants; they had undergone previous surgery affecting the sinus and were also heavy smokers. The remaining 22 patients were satisfied with their treatment as shown by visual analogue scale scores. The results presented are in keeping with those of other reports and underscore the viability of the procedure., (Copyright © 2014 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
3. [Symptomatic treatment of lichen planus of the attached gingiva].
- Author
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Brouns VE, Stenveld HJ, Klomp GH, and Brouns JJ
- Abstract
Lichen planus is a chronic systemic disease which is probably caused by a disorder in the immune system. The erythematous or erosive form is usually seen on the attached gingiva. It can produce complaints and interfere with effective oral care. Both local and systematic application of corticosteroids can reduce complaints. The local application of corticosteroids is difficult and its therapeutic effect is therefore limited. For a longer-term local application of corticosteroids, a protective plate of resin with a reservoir of corticosteroid ointment can be employed. It appears that a rapid reduction in complaints can be achieved in this way, provided that the patient makes frequent use of the protective plate and his or her oral care is up to standard. By means of this method, the total quantity of corticosteroids which the patient receives can be drastically reduced, while the local application is optimized, providing a relatively rapid reduction in complaints.
- Published
- 2014
- Full Text
- View/download PDF
4. Rational approach to diagnosis and treatment of ameloblastomas and odontogenic keratocysts.
- Author
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Chapelle KA, Stoelinga PJ, de Wilde PC, Brouns JJ, and Voorsmit RA
- Subjects
- Acetic Acid therapeutic use, Adolescent, Adult, Aged, Ameloblastoma diagnosis, Ameloblastoma pathology, Biopsy, Chloroform therapeutic use, Diagnosis, Differential, Ethanol therapeutic use, Female, Fixatives, Humans, Jaw Neoplasms diagnosis, Jaw Neoplasms pathology, Male, Middle Aged, Neoplasm Recurrence, Local pathology, Odontogenic Cysts diagnosis, Odontogenic Cysts pathology, Retrospective Studies, Ameloblastoma surgery, Decision Trees, Jaw Neoplasms surgery, Odontogenic Cysts surgery
- Abstract
We present decision trees on the treatment of cystic lesions of the jaws based on their location. We give special consideration to the treatment of potentially aggressive lesions such as odontogenic keratocysts and cystic ameloblastomas. The treatment plan is based on a retrospective study of 19 ameloblastomas and similar published studies combined with a prospective study of keratocysts.
- Published
- 2004
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5. Rehabilitation of patients with severe (Class VI) maxillary resorption using Le Fort I osteotomy, interposed bone grafts and endosteal implants: 1-8 years follow-up on a two-stage procedure.
- Author
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Stoelinga PJ, Slagter AP, and Brouns JJ
- Subjects
- Adult, Aged, Bone Transplantation, Female, Follow-Up Studies, Humans, Male, Middle Aged, Alveolar Bone Loss surgery, Dental Implantation, Endosseous methods, Maxillary Diseases surgery, Osteotomy, Le Fort methods
- Abstract
The 1 to 8 years follow-up results on a group of 15 patients who underwent a Le Fort I osteotomy with interposed bone grafts and who received implants at a second stage, are reported. The procedure proved to be extremely reliable in that sufficient bone was present for maximum size implants, whilst implant survival appeared to be high (94.6%). The forward advancement was stable and no discernible relapse occurred after prosthesis placement. All patients but one were highly satisfied with the aesthetic result and the rehabilitation of function.
- Published
- 2000
6. The quadrangular osteotomy revisited.
- Author
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Stoelinga PJ and Brouns JJ
- Subjects
- Adolescent, Adult, Bone Plates, Cephalometry, Female, Humans, Jaw Fixation Techniques, Male, Maxilla abnormalities, Middle Aged, Maxilla surgery, Oral Surgical Procedures methods, Orbit innervation, Orbit surgery, Osteotomy methods, Paresthesia prevention & control
- Abstract
The results are reported on six patients who underwent a modified quadrangular osteotomy to avoid dysaesthesia of the infraorbital nerve. The suggested modification served its purpose well, while the functional and aesthetic results were excellent.
- Published
- 2000
- Full Text
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7. Perioperative morbidity in maxillofacial orthopaedic surgery: a retrospective study.
- Author
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Van de Perre JP, Stoelinga PJ, Blijdorp PA, Brouns JJ, and Hoppenreijs TJ
- Subjects
- Adolescent, Adult, Anesthesia, Dental methods, Antibiotic Prophylaxis, Blood Loss, Surgical, Female, Humans, Intraoperative Complications, Jaw Fixation Techniques, Male, Postoperative Complications, Retrospective Studies, Orthognathic Surgical Procedures, Osteotomy adverse effects
- Abstract
The data of 2049 patients, who underwent maxillofacial orthopaedic surgery, were retrospectively analysed for major intra- and immediate postoperative complications. Immediate life-threatening complications were very rare. They can in most cases be avoided by good anaesthetic and surgical techniques and adequate postoperative care. The most frequently encountered problem in maxillary surgery is excessive blood loss, whilst a compromised airway due to swelling is the most frequent complication in mandibular surgery. Good co-operation between anaesthetist and surgeon is essential to prevent major intraoperative and immediate postoperative problems.
- Published
- 1996
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8. Modelling and monitoring organochlorine and heavy metal accumulation in soils, earthworms, and shrews in Rhine-delta floodplains.
- Author
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Hendriks AJ, Ma WC, Brouns JJ, de Ruiter-Dijkman EM, and Gast R
- Subjects
- Animals, Cadmium metabolism, Environmental Monitoring, Insecticides metabolism, Kidney metabolism, Liver metabolism, Metals metabolism, Netherlands, Oligochaeta, Shrews, Soil Pollutants analysis, Water Pollutants, Chemical analysis, Cadmium toxicity, Hydrocarbons, Chlorinated, Insecticides toxicity, Metals toxicity, Soil Pollutants toxicity, Water Pollutants, Chemical toxicity
- Abstract
In the Rhine-delta, accumulation of microcontaminants in floodplain foodwebs has received little attention in comparison with aquatic communities. To investigate organochlorine and metal concentrations in a terrestrial foodchain, samples of soil, earthworms (Lumbricus rubellus), and shrew (Crocidura russula, Sorex araneus) livers and kidneys were taken from two moderately to heavily polluted floodplains. Chlorobiphenyl residues in earthworm fat were 0.10 to 3.5 times the concentrations in soil organic matter, whereas ratios for other organochlorines varied between 0.87 and 8.8. These ratios are one order of magnitude lower than expected from laboratory experiments with earthworms, and laboratory and field studies on aquatic invertebrates. Bioconcentration ratios for heavy metals are in accordance with literature values for other locations, confirming the high potential for cadmium accumulation in Lumbricidae. Concentrations of organochlorines in shrew liver lipids were 1.0 to 13 times the residues in earthworm fat. These values are higher than lipid-corrected biomagnification ratios for laboratory rodents, but equal to those measured for benthivorous birds in the Rhine-delta. On a dry weight basis, kidney-earthworm ratios for cadmium were about one order of magnitude lower than previously reported values for insectivores. Soil concentrations of many compounds in both floodplains did not meet Dutch quality standards. Yet, hexachlorobenzene, chlorobiphenyl 153 (PCB153), gamma-hexachlorocyclohexane, sigma DDT, and dieldrin residues in earthworms and shrews did not exceed diet levels expected to be safe for endothermic species. An exception was noted for cadmium in worms and shrew kidneys. Heavy metal pollution in soil was close to levels that are critical to earthworms in laboratory studies. Cadmium concentrations in shrew kidneys were below levels suggested to be safe for Sorex araneus, but above those that were critical to the rat.
- Published
- 1995
- Full Text
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9. Reconstruction of the severely resorbed (Class VI) maxilla. A two-step procedure.
- Author
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Cawood JI, Stoelinga PJ, and Brouns JJ
- Subjects
- Adult, Dental Implantation, Endosseous, Durapatite, Female, Humans, Male, Maxilla surgery, Middle Aged, Osteotomy methods, Treatment Failure, Alveolar Bone Loss surgery, Bone Transplantation, Maxillary Diseases surgery, Maxillary Sinus surgery, Oral Surgical Procedures, Preprosthetic methods
- Abstract
The medium-term results of 12 patients that underwent reconstruction of the severely resorbed maxilla are reported. The method described entails a two-step procedure including Le Fort I osteotomy and grafting of the floor of the sinus and nose with particulate bone and hydroxyapatite (HA). The implants were placed in a second procedure. A 5% failure rate was noted in those patients that were grafted with particulate bone mixed with HA.
- Published
- 1994
- Full Text
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10. Sagittal split advancement osteotomies stabilized with miniplates. A 2-5-year follow-up.
- Author
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Scheerlinck JP, Stoelinga PJ, Blijdorp PA, Brouns JJ, and Nijs ML
- Subjects
- Adolescent, Adult, Bone Resorption etiology, Bone Screws, Cephalometry, Female, Follow-Up Studies, Humans, Male, Mandible abnormalities, Mandible pathology, Mandibular Condyle pathology, Mandibular Diseases etiology, Mandibular Nerve physiopathology, Orthodontics, Corrective, Osteotomy adverse effects, Osteotomy instrumentation, Paresthesia etiology, Prospective Studies, Temporomandibular Joint physiopathology, Temporomandibular Joint Disorders etiology, Bone Plates, Mandible surgery, Osteotomy methods
- Abstract
Skeletal stability, temporomandibular joint (TMJ)-function, and inferior alveolar nerve function were evaluated in 103 patients with mandibular hypoplasia who were treated with bilateral sagittal split osteotomies to advance the mandible. Stable internal fixation was obtained with miniplates and four monocortical screws. The follow-up period was at least 24 months (average: 32 months; maximum: 60 months). The average B-point advancement was 5.85 mm. Ninety-three patients of 103 (90.3%) had no appreciable relapse at B-point. Eight (7.7%) patients had relapse because of condylar resorption. Maximum mouth opening decreased an average of 1 mm. Sixty-eight percent of the patients with preoperative TMJ-dysfunction symptoms reported improvement or resolution of their symptoms. Sixteen percent experienced worsening of their TMJ symptoms. Permanent neurosensory deficits were identified in five patients (five sides).
- Published
- 1994
- Full Text
- View/download PDF
11. Stability after reoperation for progressive condylar resorption after orthognathic surgery: report of seven cases.
- Author
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Crawford JG, Stoelinga PJ, Blijdorp PA, and Brouns JJ
- Subjects
- Adolescent, Adult, Bone Resorption etiology, Female, Follow-Up Studies, Humans, Malocclusion surgery, Recurrence, Reoperation, Temporomandibular Joint Disorders surgery, Bone Resorption surgery, Malocclusion etiology, Mandibular Condyle pathology, Orthognathic Surgical Procedures, Osteotomy adverse effects
- Published
- 1994
- Full Text
- View/download PDF
12. Long-term stability after inferior maxillary repositioning by miniplate fixation.
- Author
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Baker DL, Stoelinga PJ, Blijdorp PA, and Brouns JJ
- Subjects
- Adolescent, Adult, Bone Screws, Bone Transplantation, Cephalometry, Female, Follow-Up Studies, Humans, Male, Occlusal Splints, Osteotomy instrumentation, Recurrence, Stainless Steel, Vertical Dimension, Bone Plates, Maxilla pathology, Maxilla surgery, Osteotomy methods
- Abstract
Nineteen patients underwent Le Fort I osteotomy and inferior maxillary repositioning. Miniplates were used to maintain the maxilla in its new position. The patients were followed from 12 to 58 months, postoperatively. Fourteen patients were considered to be stable over the long term. Five patients had a long-term relapse of more than 30%. A tendency towards greater relapse was seen in patients with more than 5 mm inferior repositioning, and in patients who had concurrent segmental osteotomies of the maxilla. In spite of the use of miniplates, there continues to be an element of unpredictability with regard to vertical relapse after inferior maxillary repositioning, and this may be related to soft-tissue influences.
- Published
- 1992
- Full Text
- View/download PDF
13. Long-term results on the quadrangular osteotomy.
- Author
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Brouns JJ and Freihofer HP
- Subjects
- Adolescent, Adult, Attitude to Health, Cephalometry, Cleft Lip surgery, Cleft Palate surgery, Esthetics, Follow-Up Studies, Humans, Malocclusion, Angle Class III therapy, Mandible surgery, Mastication physiology, Nose surgery, Orthodontics, Corrective, Patient Satisfaction, Pulmonary Ventilation physiology, Recurrence, Zygoma surgery, Maxilla surgery, Orbit surgery, Osteotomy methods
- Abstract
The results of a follow-up study of 17 patients who underwent a quadrangular osteotomy, are presented. The indication for a quadrangular osteotomy includes a hypoplastic maxilla with retruded infra-orbital rims and infra-orbital area, but with normal nose projection. Almost all patients were satisfied with the result. Relapse in a horizontal direction appeared to be approximately 12%; however, considerable relapse was seen in the vertical direction (61.7%-158%). A major problem during operation appeared to be the high rate of fractures of the infra-orbital wing. Sensory loss in the area of the infra-orbital nerve occurred in 79% of the operated sides. Four patients needed surgical correction of conditions that should be considered complications resulting from the osteotomy, including a case of partial ischaemic necrosis of the premaxilla in a BCLP patient.
- Published
- 1992
- Full Text
- View/download PDF
14. Sensibility and cutaneous reinnervation of pectoralis major myocutaneous island flaps. A preliminary clinical report.
- Author
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Hoppenreijs TJ, Freihofer HP, Brouns JJ, Bruaset I, and Manni JJ
- Subjects
- Adult, Aged, Female, Follow-Up Studies, Humans, Male, Middle Aged, Mouth Mucosa physiology, Nervous System Diseases etiology, Pectoralis Muscles innervation, Skin Physiological Phenomena, Skin Transplantation methods, Wound Healing, Facial Neoplasms surgery, Mouth Mucosa innervation, Mouth Neoplasms surgery, Pectoralis Muscles transplantation, Sensation physiology, Skin innervation, Surgical Flaps
- Abstract
The cutaneous sensibility of 13 pectoralis major cutaneous island flaps has been investigated retrospectively. Although in raising the pectoralis major myocutaneous island flap sensory denervation of the skin is produced, after a mean follow-up period of 29 months (range 5 to 71 months), 68% of the cutaneous portion of the flap revealed sensibility to touch, suggesting a reinnervation from the surrounding intact oral mucosa or skin. The rate of reinnervation was found to be related to the sensibility present in the surrounding tissue.
- Published
- 1990
- Full Text
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15. [Fragmentation of sialoliths].
- Author
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Brouns JJ, Hendrikx AJ, and Bierkens AF
- Subjects
- Humans, Lithotripsy adverse effects, Salivary Gland Calculi therapy
- Abstract
An in vitro experiment proved that a sialolith can be disintegrated, but that also serious damage is caused to the teeth and dental restorations. Therefore, no experiment was carried out on a patient, although it proved to be possible to position a patient on a lithothriptor in a way that the shock wave of the apparatus would hit the sialolith without passing the brain, eyeballs and laryngeal skeleton.
- Published
- 1990
16. Removal of salivary stones with the aid of a lithotriptor.
- Author
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Brouns JJ, Hendrikx AJ, and Bierkens AF
- Subjects
- Dental Amalgam, Dental Enamel injuries, Humans, In Vitro Techniques, Tooth Fractures etiology, Lithotripsy adverse effects, Salivary Gland Calculi therapy
- Abstract
The feasibility of removal of salivary calculi with the aid of high energy shock waves was investigated. The postulation was, that salivary stones can be fragmented and no harm will be done to the surrounding tissues. An in vitro experiment was done with a lithotriptor to test the effect on a salivary stone and an extracted upper molar containing an amalgam restoration. Also investigated was whether a patient can be positioned in a prone position on the lithotriptor. In the in vitro experiment, the salivary stone was fragmented very quickly, but the amalgam restoration also fragmented. The patient could be positioned in the correct position on the lithotriptor, but because of the expected damage to the dentition, the experiment was not carried out on the patient.
- Published
- 1989
- Full Text
- View/download PDF
17. [Neurofibromatosis: orofacial manifestations].
- Author
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Brouns JJ
- Subjects
- Adolescent, Child, Female, Humans, Male, Mandibular Neoplasms diagnosis, Neurofibromatosis 1 diagnosis
- Published
- 1988
18. [The underdevelopment of the midface].
- Author
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Brouns JJ and Muller H
- Subjects
- Adult, Diagnosis, Differential, Humans, Male, Maxilla abnormalities, Maxilla surgery, Osteotomy methods, Maxilla growth & development
- Published
- 1985
19. The role of yearly chest radiography in the early detection of lung cancer following oral cancer.
- Author
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Stalpers LJ, van Vierzen PB, Brouns JJ, Bruaset I, Manni JJ, Verbeek AL, Ruys JH, and van Daal WA
- Subjects
- Adult, Aged, Aged, 80 and over, Female, Humans, Lung Neoplasms epidemiology, Lung Neoplasms secondary, Male, Middle Aged, Prognosis, Time Factors, Carcinoma, Squamous Cell therapy, Lung Neoplasms diagnostic imaging, Mouth Neoplasms therapy, Neoplasms, Multiple Primary epidemiology, Radiography, Thoracic
- Abstract
In a study of 213 patients with oral cancer, we investigated the incidence and prognosis of lung malignancies in patients offered a yearly chest radiography in the follow-up. Three conclusions can be drawn. (1) Metastatic or primary lung cancer was diagnosed in 22 (10.3%) patients. The 2-year actuarial incidence rate of lung cancer following cancer of the oral cavity is 13%. No new lung cancers were detected after 2 years follow-up. This suggests that after this period, yearly chest radiography may be superfluous for the early detection of lung cancer. (2) The survival rate of patients with a lung malignancy following cancer of the oral cavity is poor (1-year = 25%). The survival rate of patients detected by the yearly chest radiography without symptoms is higher than for patients detected after symptoms (p = 0.006). It is not clear to what extent this different survival rate is biased by lead-time and selection of patients with a favourable prognosis. A randomized study would be required to assess whether patients with oral cancer do benefit from the yearly chest radiography compared with no regular chest radiography. (3) Of 22 patients with lung cancer, 13 (59%) were detected by chest radiography without symptoms. In the first year following oral cancer, 11 patients were diagnosed with lung cancer. Only 4 of these 11 patients (36%) were detected by chest radiography in an asymptomatic stage. The detection of patients with lung cancer in an asymptomatic stage may be increased by more frequent chest radiography examinations in the 1st year following oral cancer.
- Published
- 1989
- Full Text
- View/download PDF
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