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하악지 시상 분할골절단술과 동시에 시행되는 우각부 절제술
김재승,장현호,류성호,강재현,이승호,Kim, Jae-Seung,Chang, Hyun-Ho,Ryu, Sung-Ho,Kang, Jae-Hyun,Lee, Seung-Ho 대한구강악안면외과학회 2001 대한구강악안면외과학회지 Vol.27 No.3
A prognathic mandible and prominent gonial angle are considered to be unattractive in the Orient because it gives the face a square and muscular appearance. Requests for contouring of the mandibular angle are rare in the other race but are much more common in Korea and, through out the Orient. So, we often encounter a patient with a prognathic mandible and squarish or broad face who wishes to have his or her facial size reduced minimally or to acquire a round or slender appearance. But, mandibular angle is located in the deepest part of the operative field and the strong tension of the lateral soft tissue makes retraction difficult. It is extremely difficult to reduce the gonial angle with sagittal split ramus osteotomy by intraoral approach at the same time. We apply the method of gonial angle reduction during SSRO and had satisfactory results. We will present our results and hope to give some useful information for management of mandibular deformity.
김재승,장현호,장철호,류성호,강재현,Kim, Jae-Seung,Chang, Hyun-Ho,Chang, Cheol-Ho,Rhyu, Sung-Ho,Kang, Jae-Hyun 대한구강악안면외과학회 2001 대한구강악안면외과학회지 Vol.27 No.2
Since the introduction of the concept of osseointegration, the success rate of dental implant has increased dramatically. So, the uses of dental implant in the treatment of partially or fully edentulous patients have played an important role in dental rehabilitation. Regardless of high success rate of dental implant, some amounts of fixtures cannot help failing. We can classify dental implant failure according to timing, causative factor, etc. This study is focused on dental implant fixture failure, occurring during preprosthetic stage. There are various reasons that cause implant failure on this periods, such as improper patient selection, poor bone quality, and periimplantitis, etc. We investigate the survival rate of 1058 fixtures, which installed in 306 patients in our clinic from January 1997 to December 1999, according to type, sex, location, fixture length and width, using Kaplan-Meier product-limit method and to compare each other with log-rank test. Overall survival rate was 96.80%, and 33 implants failed over the preprosthetic stage. Our survey data identified posterior location of mandible as being associated with implant failure(P<0.05).