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Re-establishment of occlusal plane in a patient with a failed implant prosthesis
강현구,고경호,허윤혁,조리라,박찬진,Kang, Hyeon-Goo,Ko, Kyung-Ho,Huh, Yoon-Hyuk,Cho, Lee-Ra,Park, Chan-Jin The Korean Academy of Prosthodonitics 2018 대한치과보철학회지 Vol.56 No.2
계속적인 치아의 상실과 마모 및 보철물의 실패로 초래된 생리적이지 못한 교합평면은 비심미성, 저작 효율의 감소 및 교합 간섭와 같은 기능적인 문제을 야기할 수 있다. 따라서, 무치악 환자나 교합 평면이 붕괴된 환자의 보철 치료 시, 저작 기능과 조화로운 교합평면의 설정이 중요하다. 본 증례의 환자는 완전 무치악 상태인 상악을 임플란트 고정성 보철물로 수복하였다. 6년 경과 관찰 시, 기존 임플란트 보철물의 도재 파절, 마모, 나사풀림과 같은 기계적 합병증이 관찰되었고, 대합하는 전치의 마모 및 정출과 일부 구치부 치아의 상실로 인해 교합평면이 붕괴된 상태였다. 진단 과정을 거쳐 무치악 부위의 추가적인 임플란트 식립과 보철물의 재제작 및 모든 잔존 치아의 수복을 통해 전악구강회복을 시행하였다. A non-physiological occlusal plane caused by continuous tooth loss, occlusal wear, and failure of a prosthesis may result in an unattractive appearance and functional problems, such as reduced masticatory efficiency and occlusal interference. Therefore, when undertaking prosthetic treatment for edentulous patients or patients with a collapsed occlusal plane, it is important to establish an occlusal plane that is compatible with masticatory function. The patient in this case report had undergone restoration of a completely edentulous maxilla using an implant-supported fixed prosthesis. On follow-up examination in the following 6 years, mechanical complications were observed in the existing implant prosthesis, including porcelain chipping, occlusal wear, and screw loosening. Moreover, due to occlusal wear and supraeruption of the opposing anterior teeth, as well as loss of some posterior teeth, the occlusal plane had collapsed. Following diagnosis, the patient underwent full mouth rehabilitation, involving additional implant installation in edentulous sites, recreation of the existing prosthesis, and prosthetic restoration of all remaining teeth.
군에서 일어날 수 있는 치과적 외상에 의한 치아 손상 증례보고
박준성 ( Jun-seong Park ),홍석찬 ( Seok-chan Hong ),박은철 ( Eun-chul Park ),강현구 ( Hyeon-goo Kang ),이윤 ( Yoon Lee ) 국군의무사령부 2019 대한군진의학학술지 Vol.50 No.1
Tooth injuries by dental trauma can occur in the military through various ways. Army dentist should be aware of many kinds of tooth injuries by dental trauma and the proper management for each injury. Correct diagnosis of tooth injuries by dental trauma is important for its management. However there are many consideration to the diagnosis of traumatic dental injuries. Periodic clinical and radiographic examinations are necessary. These case reports describe diagnosis of many kinds of tooth injuries by dental trauma and their proper management by periodic clinical and radiographic examinations.
월견초 종자추출물 투여에 의한 생체면역 반응 억제 및 그 기전
강현구,유형근,신형식 圓光大學校 1993 論文集 Vol.27 No.2
Recently, essential fatty acids(EPA) have started commanding clincal interest. Their vast possibilities for therapeutic use make basic knowledge of their chemical nature and physiologic significance a necessity. EPAs are important not only in themselves but also as precursors of other polyunsaturayed fatty acids. Evaing primrose extract(EPE) is a naturally occurring rich source of EPA especially linoleic and gamma-linolenic acid which are biosynthetic precursors of prostaglandins(PG). SO gamma-linolenic acid in the form of particular variety of EPE has been extensively reported of value in the treatment of various disorders resulting from the abnormalities of EPA. However, surprisingly little has been done to develope and exploit EPE’s immunomodulating properties. Moreover, the mechanisms of EPE action on ommune function has not been elucidated. This study was designed to evaluate the effect of EPE on the cellular and humoral immunr responses of mice, and to investigate the mechanisms responsible for the immunomodulating action of EPE. Mice sensitized with ?? SRBC were injected with EPE(1mg/mouse,ip) for 4 days before SRBC, and/or with cholesterol(CHO,10mg/mouse,sc) on day O of SRBC, or with indomethacin(an inhibitor of PG-synthetase, IDM, 0.15mg/mouse,ip) on day-1 and O of SRBC, and challenged with a dose of ?? SRBC on day 4 of sensitization. The effect of EPE on immune response and the effect of CHO and IDM on EPE-induced immunosuppression were evaluated by measuring the footpad sweelling reaction and antibody response to SRBC. EPE itself did not influence arthus reaction but remarkably reduced delayed type hypersesitivity(DTH) and antibody production in comparison with the corresponding control. While CHO slightly increased Arthus reaction and DTH but it somewhat decreased antibody responses. IDM significantly enhanced both cellular and humoral immune response. And when CHO or IDM was administered into mice in combination with EPE, both of them significantly blocked the immunosuppressive activities of EPE at the almost same degree. Taken together, the present study revealed that EPE iteslf has immunosuppressive principle, and that this nonspecific immune-inhibitory effect of EPE might be manifested partially via the decrement of the CHO-levels and partially via the enhancement of PG synthesis.