• 대한치과교정학회지
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• 제23권4호
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• pp.455-474
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• 1993

Degenerative joint disease(DJD) has hun known as one of the diseases which affect the middleor old-aged people. But as orthodontists are getting interested in the adult orthodontics, it is not rare for them to meet the open-bite patients with the TMJ DJD in their clinics. The purpose of this article is to investigate the cephalometric characteristics of the open-bite cases with TMJ DJD. Twelve TMJ DJD patients($15.1\~39.5$ years old) were selected from the patients who visited Department of Orthodontics, Seoul National University Hospital. Cephalograms were taken and means from 60 measurements were compared by t-test with those of the fifty four healthy adults($20.0\~26.7$ years old) who have normal occlusion and TMJ. In this study male and female are compared respectively, for in the normal samples 26 measurements showed significant differences between the male and the female. The results and conclusions axe as follows: 1 In DJD group, ANB and Angle of convexity decreased, which means the retruding of the mandible. The interincisal angle was smaller than that of the normal group. The means of the overbite were -2.1mm in male and -3.0mm in female, and the means of the overjet were 5.6mm in male and 6.7mm in female. The profile was similar to that of Angle's Class II div.1 open-bite. 2. SN-GoMe and FMA increased in DJD but SN-PP and FH-PP did not show any significant difference. In TMJ DJD open-bite cases, the bony structure lower than the palatal plane seemed to play an important role in developing open-bite. 3. In DJD group, PH-ArGo, SArGo and Y-sxis angle increased significantly, but genial angle showed no significant difference. The means of hか were 50.1mm in male and 40.2mm in female, which were significantly smaller than those of the normal(56.5mm in male, 50.9mm in female). These findings seemed to indicate the posterior rotation of mandible resulted from the shortening of the ramus height. 4. Anterior faical height(AFH), upper anterior facial height(UAFH) and lower anterior facial height (LAEH) of DJD showed no significant increase as compared with those of the noraml group. There was no significant difference in the ratio of upper anterior facial height to lower anterior facial height(UAFH/LAFH). But, lower posterior facial height(LPFH) was significantly smaller than that of the normal group. 5. It was thought that the peculiar profile of the TMJ DJD open-bite was resulted from the posterior rotation of mandible as the ramus became short following the degerative destruction of of the condylar head and neck.

• 한국임상수의학회지
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• 제32권1호
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• pp.22-27
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• 2015

이 연구는 개에서 내측 슬개골 탈구 2도와 3도를 수술적으로 교정한 증례를 활차성형술 적용 여부에 따라 후향적으로 평가한 것이다. 본 후향 연구는 63마리의 개에서 68건의 수술한 케이스를 대상으로 하였으며, 합병증, 회복기간 및 방사선 검사로 퇴행성 관절 변화를 평가하였다. 수술 후 최소 3개월 이상 정기적으로 예후를 평가하였다. 합병증은 총 10.3% (7/68)의 재탈구와 1 케이스에서 경골조면 이식 실패를 확인하였다. 재탈구와 합병증 때문에 재수술을 요하는 경우는 활차성형술을 적용한 군에서는 3케이스(3/47, 6.4%), 활차성형술을 적용하지 않은 군에서는 1케이스(1/21, 4.8%)였다. 활차성형술을 적용하지 않은 군은 적용한 군에 비교하여 회복시간이 유의적으로 짧았고, 방사선 검사상 확인된 퇴행성 관절 변화에서 유의적인 차이를 보였다. 따라서, 2도와 3도의 내측 슬개골 탈구의 경우, 활차성형술을 적용하지 않는 수술방법이 수술적 예후를 향상 시킬 것으로 생각한다.