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46 results on '"Lee, Sung-Tak"'

8. Requirements for Dental CAD Software: A Survey of Korean Dental Personnel

Author

Son, KeunBaDa, primary, Kim, Gyu Ri, additional, Kim, Won-Gi, additional, Kang, Wol, additional, Lee, Du-Hyeong, additional, Kim, So-Yeun, additional, Lee, Jae-Mok, additional, Kim, Yong-Gun, additional, Kim, Jin-Wook, additional, Lee, Sung-Tak, additional, Jin, Myoung-Uk, additional, Kim, Ho-Jin, additional, Lee, Jaesik, additional, Kim, Ji-Rak, additional, and Lee, Kyu-Bok, additional

Published
2023
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16. Medication Related Osteonecrosis of the Jaw: 2021 Position Statement of the Korean Society for Bone and Mineral Research and the Korean Association of Oral and Maxillofacial Surgeons

Author

Kim, Jin-Woo, primary, Kwak, Mi Kyung, additional, Han, Jeong Joon, additional, Lee, Sung-Tak, additional, Kim, Ha Young, additional, Kim, Se Hwa, additional, Jung, Junho, additional, Lee, Jeong Keun, additional, Lee, Young-Kyun, additional, Kwon, Yong-Dae, additional, and Kim, Deog-Yoon, additional

Published
2021
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29. Aspergillosis of the Maxillary Sinus Associated With Dental Implant.

Author

Jang, Seong-Baek, Lee, Sung-Tak, Choi, So-Young, Kwon, Tae-Geon, and Kim, Jin-Wook

Subjects
MAXILLARY sinus, DENTAL implants, ASPERGILLOSIS, MYCOSES, PULMONARY aspergillosis, TREATMENT effectiveness
Abstract

Aspergillosis is a fungal disease caused by the fungus Aspergillus; this disease frequently involves the lungs and occasionally the maxillary sinus. Aspergillosis in the maxillary sinus usually has the characteristics of a noninvasive form. It has been suggested that spores of aspergillus can be inhaled into the maxillary sinus via the osteomeatal complex or via an oroantral fistula after dental procedures, such as an extraction. However, maxillary aspergillosis related to implant installation has rarely been reported. This report regards unusual cases of maxillary aspergillosis associated with dental implant therapies in healthy patients. The cases were successfully treated with the surgical removal of the infected or necrotic tissues. [ABSTRACT FROM AUTHOR]

Published
2022
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33. Delayed tooth eruption due to gingival neurofibroma in two children with neurofibromatosis 1.

Author

Kim, Keun‐Hwan, Lee, Dong‐Woo, and Lee, Sung‐Tak

Subjects
NEUROFIBROMATOSIS 1, GINGIVA, TOOTH eruption, VON Hippel-Lindau disease, NEUROFIBROMA, TUMOR suppressor genes, CHILD patients
Abstract

Gingival neurofibroma is rare lesion in patients with neurofibromatosis TYPE 1 Delayed tooth eruption may be the first sign for patients to visit the hospital in patients with undiagnostic neurofibromatosis TYPE 1 associated with gingival neurofibromatosis. The jaw deformities include intra bony jaw lesions, such as widened mandibular canals and enlarged mandibular foramina.6 In the first case a ten year old patient presented with gingival hyperplasia around the unerupted tooth, and the histologic examination confirmed gingival neurofibroma. Gingival hyperplasia is a common manifestation in paediatric patients with NF-1, and increases according to patient age. [Extracted from the article]

Published
2021
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34. Comparing factors affecting dental‐implant loss between age groups: A retrospective cohort study.

Author

Boboeva, Obida, Kwon, Tae‐Geon, Kim, Jin‐Wook, Lee, Sung‐Tak, and Choi, So‐Young

Subjects
AGE groups, COHORT analysis, SMOKING, OLDER people, OLDER patients, OSSEOINTEGRATED dental implants
Abstract

Background: There is a growing interest in factors leading to implant failure in older people as the population aged 65 years or older continues to expand. Purpose We sought to identify differences of results in the implant survival rate and the influence of certain factors on implant failure in the older (≥65 years) and younger (<65 years) patients. Materials and Methods: Patients who underwent their first dental‐implant surgery between July 2008 and June 2018 were included. Data on age, sex, smoking habits, medical conditions, implant location, implant size, and the presence and type of bone graft and membrane were collected and analyzed according to age group. Moreover, cumulative survival rates of implants (by Kaplan‐Meier analysis) and hazard ratios (HR) of each factor (using Cox regression analysis with shared frailty) in each group were assessed and results compared between groups. Results: A total of 628 implants in 308 patients and 1904 implants in 987 patients in the older and younger groups, respectively, were assessed, with failure rates of 3.9% and 3.4%. Per Kaplan‐Meier analysis, the 11‐year patient‐level cumulative survival rate of implant treatment was 95.3% (95% CI: 0.91‐0.97) in the older and 93.9% (95% CI: 0.88‐0.97) in the younger group. The HR for implant failure of the variables, except diameter of dental implants, were not statistically significant in both groups. Conclusion: The outcomes of implant treatment were not considerably different between the age groups. [ABSTRACT FROM AUTHOR]

Published
2021
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45. Warm-start strategies in primal-dual interior point method for linear programming.

Author

Lee, Sung Tak., Chinese University of Hong Kong Graduate School. Division of Systems Engineering and Engineering Management., Lee, Sung Tak., and Chinese University of Hong Kong Graduate School. Division of Systems Engineering and Engineering Management.

Abstract

Lee Sung Tak., Thesis (M.Phil.)--Chinese University of Hong Kong, 2001., Includes bibliographical references (leaves 100-101)., s in English and Chinese., Chapter 1 --- Introduction and Synopsis --- p.1, Chapter 2 --- Literature Review --- p.5, Chapter 3 --- The primal-dual interior point algorithm and the self-dual embedding method: Revisit --- p.7, Chapter 4 --- The Warm-Start Strategy (WSS) --- p.25, Chapter 5 --- Experimental result and analysis I: Parametric programming case --- p.31, Chapter 5.1 --- The Big-Mac Problem --- p.33, Chapter 5.2 --- The randomly generated problem and the Netlib problem --- p.46, Chapter 5.3 --- Chapter summary --- p.53, Chapter 6 --- Experimental result and analysis II: Adding rows and columns --- p.54, Chapter 6.1 --- The Big-Mac problem --- p.57, Chapter 6.2 --- The randomly generated problem and the Netlib problem --- p.66, Chapter 6.3 --- The ball constraint problem --- p.82, Chapter 6.4 --- Chapter Summary --- p.94, Chapter 7 --- Summary and conclusion --- p.96, Bibliography --- p.100, Chapter A --- Appendix --- p.102, http://library.cuhk.edu.hk/record=b5890784, Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Published
2001

46. Evaluation of Depth of Invasion and Tumor Thickness as a Prognostic Factor for Early-Stage Oral Squamous Cell Carcinoma: A Retrospective Study.

Author

Lee, You-Jung, Kwon, Tae-Geon, Kim, Jin-Wook, Lee, Sung-Tak, Hong, Su-Hyung, and Choi, So-Young

Subjects
SQUAMOUS cell carcinoma, PROGNOSIS, PROGRESSION-free survival, SURVIVAL analysis (Biometry), RETROSPECTIVE studies
Abstract

The aim of this study was to compare the effect of using depth of invasion (DOI) versus tumor thickness (TT) as a prognostic factor for early-stage oral squamous cell carcinoma (OSCC). A total of 57 patients with early-stage OSCC treated surgically from 2009 to 2014 at our institution were reviewed retrospectively. Histopathological measurement of DOI and TT was performed. The validation of DOI and TT as prognostic factors was conducted using a Kaplan–Meier survival analysis. TT had no association with disease-specific survival (DSS) or progression-free survival (PFS) in this cohort; however, increased DOI was significantly associated with decreased DSS but not correlated to decreased PFS. The T category of the 7th edition of AJCC was statistically associated with both DSS and PFS; however, the T category of the 8th edition of the AJCC was only associated with DSS. In this study group, TT could not be used as a prognostic factor, and DOI was not by itself sufficient to predict prognosis for early-stage OSCC. The T category in AJCC 8th Edition cannot be considered the sole prognostic factor for early OSCC, so additional prognostic factors may need to be considered. [ABSTRACT FROM AUTHOR]

Published
2022
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