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측두하악관절 내장증시 측방 개별화 보정단층방사선사진에서의 하악과두의 위치
김근민,황의환,이상래,Kim Keun-Min,Hwang Eui-Hwan,Lee Sang-Rae 대한영상치의학회 2002 Imaging Science in Dentistry Vol.32 No.2
Purpose: To examine the possible relationship between condylar position and disk displacement in the temporomandibular joint. Materials and Methods: 79 temporomandibular joints in 40 patients having temporomandibular disorders were classified into three categories: no disk displacement (NDD) , disk displacement with reduction (DDWR), and disk displacement without reduction (DDWOR). Disk positions were assessed from clinical and MRI findings. The relationship between the three categories and condylar positions was evaluated using lateral individualized corrected tomography. Results: Clinical findings regarding the relationship between condyle and disk positions having anterior, centric, and posterior positions were 27%, 27%, and 46%, respectively, in NDD, 43%, 17%, and 40%, respectively, in DDWR, and 44%, 22%, and 34%, respectively, in DDWOR. There were no significant differences in condylar positions between each of the groups (P>0.05). In the relationship between condyle and disk positions with MRI findings, anterior, centric, and posterior positions were 38%, 38%, and 24%, respectively, in NDD, 29%, 21%, and 50%, respectively, in DDWR, and 44%, 9%, and 47% respectively, in DDWOR. There were significant differences in the condylar positions when MRI was utilized (P<0.05) Conclusion: There was a significant correlation between the condyle and disk positions with MRI findings on lateral individualized corrected tomography.
이상석(Lee S S),김근민(Kim K M),김봉곤(Kim B G),정성식(Jung S S),하종률(Ha J Y) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
In this study. to more percisely and systematically analyze the process of combustion of the impinging spray. Helium spray was impinged on the 3 types of piston cavity geometry into the quiescent atmosphere with a room temperature and pressure to simplify the state of the real combustion chamber and hot wire probe was used for analyze non-steady flow characteristics of impinging spray. and ensemble average technique method was used for data process. and consequently re-entrant type has larger entrainment then others and vortex appear at the sperical region.<br/>