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악골결손 재건을 위한 탈회 및 비탈회 동결건조 동종골의 이용
이기혁,박인순,김영균,김수관,엄인웅,여환호,이병준 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3
Bone graft has been used to repair one defect caused by disease and trauma, congenital and acquired deformities. Graft materials are autogenous bone, allogenic bone, xenogenic bone, synthetics. Autogenous bone graft is the most superior to other materials for immunologic reaction, compatibility to host tissue, and revascularization. However, autogenous bone graft is required for additional operation and the amount of taking is limited. Autografts are obtained at own expense and also limited in size, shape. In order to compensate these problems, allogenic bone graft has been used increasingly. But allogenic bone graft encounters immunologic complications. Therefore, it has been used after freezing, lyophilization, or demineralization. Allogenic bone processed by only lyophilization includes potential antigenic properties on its surface, therefore it is demineralized to deplete immunologic reaction. Demineralized bone releases BMP and helps the mesenchymal cells transform to the chondroblast to produce cartilage and bone. This reaction is called osteoinducation. Many authors have reported that mineralized lyophilized bone had less antigenicity clinically and favorable bony consideration with host bone. In our department from 1995 to now, we have used banked allogenic bone graft that has been prepared from Wonkwang Bone Bank in 5 cases and mineralized lyophilized bone graft in 2 cases to reconstruct the maxillofacial bone defect after tumor resection and cyst enucleation and cleft alveolus. We will report with literature review that the result is favorable functionally and esthetically.
상악골에서 IMPLANT 매식을 위한 치조제 확대 골절단술
김수관,김영균,여환호,이기혁 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2
Ridge expansion osteotomy(REO) technique is a simple and more conservation method to widen a narrow alveolar ridge in the maxilla. This method is superior to drilling method in soft and narrow maxillary alveolar ridge and allows the surgeon to widen the ridge in routine office procedure. Therefore, it is the treatment of choice to implant the maxilla with narrow alveolar ridge. This article presents clinical cases and discusses the advantages, rationale and surgical protocol of REO technique.
이기혁,김현호,정태영 朝鮮大學校 口腔生物學硏究所 2001 口腔生物學硏究 Vol.25 No.1
The purpose of this study is to examine the change of enzymeimmuno-assay for prostaglandinE_2 in the synovial fluid lavage specimen of patients with mandibular fracture patients without condylar fracture. For this study, fourteen patients (eight males, six females) with mandibular fractures without condylar fracture was investigated to analyse the synovial fluid form upper temporomandibular joint cavities. Synovial fluid was collected from TMJ cavities of mandibular fracture patients before open reduction and after one week of open reduction, and then stored in liquid nitrogen tank after centrifuge. 2 synovial fluid lavage samples of TMJs of 2 asymptomatic served as normal controls referred from other data. The concentrations of PGE_2 were measured by use of PGE_2 EIA system (Amersham^(R)). The following results were obtained: 1. In nine patients, the concentrations of PGE_2 are lower after open reduction than before. 2. In three patients, the concentrations of PGE_2 are higher after open reduction than before. 3. There was no statistical significant between the preoperative group and postoperative 7 days (p>0.05), but there was some difference between the two groups. In conclusion, the results suggest that PGE_2 probably does no play as important role in the harm of TMJ.
이기혁,설인택,김수관 朝鮮大學校 口腔生物學硏究所 1998 口腔生物學硏究 Vol.22 No.1
The purpose for bone grafting alveolar clefts is not to simply close a hole in the alveolus, but to accomplish certain functional and exthesic goals. The accepted goals of alveolar bone grafting are closure of the oronasal fistula; stabilization of the lesser segment; providing adequate bone support for the teeth adjacent to the cleft; allowing for eruption of teeth in the cleft area (canine or lateral incisor teeth) with good bony support; supporting the alar base and lip; establishing good soft tissue contours with adequate keratinized gingiva for periodontal health; and minimizing growth disturbance. there are four periods in which bone grafting of cleft alveolus is performed; primary bone grafting at the time lip or soft palate closure(before 2 years of age); early secondary bone grafting performed between ages 2 and 5; secondary bone grafting performed between ages 5 and 16; late bone grafting over ages 16.