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- 저자 : 염학렬(Hak-Ryol Yeom) (검색결과 3 건)
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심하게 위축된 하악골의 완전 무치악 환자에서의 수직 골신장술을 이용한 임플란트 치료
염학렬,전승호,김윤태,팽준영,안강민,명훈,황순정,서병무,최진영,이종호,정필훈,김명진,Yeom, Hak-Ryol,Jeon, Seung-Ho,Kim, Yoon-Tae,Paeng, Jun-Young,Ahn, Kang-Min,Myung, Hoon,Hwang, Soon-Jung,Seo, Byoung-Moo,Choi, Jin-Young,Lee, Jong-Ho,Chou 대한악안면성형재건외과학회 2006 Maxillofacial Plastic Reconstructive Surgery Vol.28 No.2
Objectives : It is difficult to place implants at a severely atrophied edentulous mandible because of vertical and horizontal alveolar defect. The autogenous and allogenic bone graft and guided bone regeneration are useful, but there are some limitations such as the resorption and infection of the grafted bone, and insufficiency of soft tissue. Distraction osteogenesis has recently evolved a challenging technique to overcome major draws of conventional augmentation procedures, we, therefore, report the four applications of implant placement after vertical alveolar distraction osteogenesis. Patients and Methods : Four patients(all female, mean age: $60{\pm}6$ years) with severe alveolar ridge deficiencies at their anterior mandible were treated with vertical alveolar distraction osteogenesis by intraoral device(Track 1.5, 15 mm model, KLS Martin, Tuttlingen, Germany) and placement of implants (Branemark MK III, TiUnite). After the latency periods of 5, 7, 8 days, distraction rhythm and rate were $0.5\;mm{\times}2\;times/day$ in the case of good bone quality, and $0.25\;mm{\times}3\;times/day$ in the case of poor bone quality. After consolidation periods of mean fifteen weeks, five implants for each patients were placed at the interforaminal area. Results : On average, a vertical gain of $11.38{\pm}1.38\;mm$ was obtained by distraction. And all distraction zone showed complete ossification by panoramic radiography. There were no postoperative complications other than numbness of lower lip in one case. Total twenty implants in four patients were placed and their outcomes were satisfactory. Conclusion : It is a useful method to place five implants after vertical distraction osteogenesis of the severely atrophied mandible for the implant-supported fixed prosthesis.
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하악골 결손의 재건을 위한 혈행화된 비골 이식술에서의 장기간의 체적변화
김윤태(Yoon-Tae Kim),전승호(Seung-Ho Jeon),염학렬(Hak-Ryol Yeom),안강민(Kang-Min Ahn),명훈(Hoon Myoung),황순정(Soon-Jung Hwang),서병무(Byoung-Moo Seo),최진영(Jin-Young Choi),정필훈(Pill-Hoon Choung),김명진(Myung-Jin Kim),이종호(Jong 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.2
Introduction : In recent years, vascularized, i.e., living bone grafts, have been widely applied in the field of oral and maxillofacial surgery, as a method of treatment of congenital or acquired non-unions, and a large defects in mandible. The vascularized fibular graft has been especially used for this purpose because of its shape and mechanical strength. The postoperative hypertrophy of grafted fibula is of particular interest to us. Material and methods : This study was undertaken to determine the volume change(indirect methods) and radiographic appearance of a free vascularized fibular graft as it responds to the mechanical and physiologic features of its new environment. In order to elucidate the long term effect on fibular mass after mandibular reconstruction, change in various method of volume change was utilized as indirect measure of change in long-term. Results : The younger the patient, the more prominent and rapid the hypertrophy of the graft. the hypertrophy of the graft never exceeded the diameter of the recipient bone, except for callus enlargement after stress fracture of the grafted bone. Conclusion : Etiologic explanations for this phenomenon have not been clarified in the previeous literature. some of the factors implicated include a periosteal reaction or new bone formation, as seen at the onset of bone union after a fracture in a child, a reaction to the mechanical loading on the graft and a reaction to the circulatory changes resulting from the grafting procedure.
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백서 편측 설신경 손상 후 미각 및 설유두의 변화에 대한 연구
김윤태(Yoon-Tae Kim),전승호(Seung-Ho Jeon),염학렬(Hak-Ryol Yeom),강진한(Jin-Han Kang),안강민(Kang-Min Ahn),김성민(Sung-Min Kim),장정원(Jeongwon Jahng),박경표(Kyung-Pyo Park),이종호(Jong-Ho Lee) 대한구강악안면외과학회 2005 대한구강악안면외과학회지 Vol.31 No.6
Purpose of study: Lingual nerve damage can be caused by surgery or trauma such as physical irriatation, radiation, chemotherapy, infection and viral infection. Once nerve damage occurred, patients sometimes complain taste change and loss of taste along with serious disturbance of tongue. The purpose of this study was to evaluate the effects of unilateral lingual nerve transection on taste as well as on the maintenance of taste buds. Materials & Methods: Male Sprague-Dawley rats weighing 220-250g received unilateral transection of lingual nerve, subjected to the preference test for various taste solutions (0.1M NaCl, 0.1M sucrose, 0.01M QHCl, or 0.01M HCl) with two bottle test paradigm at 2, 4, 6, or 8 weeks after the operation. Tongue was fixed with 8% paraformaldehyde. After fixation, they were observed with scanning electron microscope(JSM-840A, JEOL, JAPAN) and counted the number of the dorsal surface of the fungiform papilla for changes of fungiform papilla. And, Fungiform papilla were obtained from coronal sections of the anterior tongue(cryosection). After cryosection, immunostaining with Gαgust(I-20)(Santa Cruz Biotechnology, USA), PLCβ2(Q-15)(Santa Cruz Biotechnology, USA), and T1R1(Alpha Diagnostic International, USA) were done. Immunofluorescence of labeled taste bud cells was examined by confocal microscopy(F92-300, Olympus, JAPAN). Results: The preference score for salty and sweet tended to be higher in the operated rats with statistical significance, compared to the sham rats. Fungiform papilla counting were decreased after lingual nerve transaction. In 2 weeks, maximum differences occurred. Gustducin and T1R1 expressions of taste receptor in 2 and 4 weeks were decreased. PLCβ2 were not expressed in both experimental and control group. Conclusion: This study demonstrated that the taste recognition for sweet and salty taste changed by week 2 and 4 after unilateral lingual nerve transection. However, regeneration related taste was occurred in the presence of preserving mesoneurial tissue and the time was 6 weeks. Our results demonstrated that unilateral lingual nerve damage caused morphological and numerical change of fungiform papilla. It should be noted in our study that lingual nerve transection resulted in not only morphological and numerical change but also functional change of fungiform papillae.
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