측두하악관절증에서 자기공명영상을 이용한 측두하악관절의
Magnetic resonance imaging-based temporomandibular joint space evaluation in
나경수,
소속 상세정보
나경수 ( Nah Kyung-Soo ) - 부산대학교 치과대학 구강악안면방사선학교실
KMID : 0896020070370010015
Abstract
Purpose : Disc and condylar position were observed on MRIs of temporomandibular joint disorder patients and
condylar position agreement between MRI and tranascranal radiography was evaluated.
Materials and Methods : MRI and transcranial radiographs of both TM joints from 67 patients with temporomandibular disorder were used. On MRI, the position and shape of disc and condylar position as anterior, middle, posterior was evaluated at medial, center, and lateral views. On transcranial radiographs, condylar position was evaluated using the shortest distance from condyle to fossa in anterior, superior, and posterior directions.
Results : 1. On MRI, 96 joints (71.6%) of 134 had anterior disc dispalcement with reduction and 38 joints (28.4%) without reduction. 2. Fourteen (14.6%) of 96 reducible joints showed anterior condylar position, 19 (19.8%) showed central position, 63 joints (65.6%) showed posterior position. Two joints (5.3%) of 38 non-reducible joints showed anterior condylar position, while 9 (23.7%) showed central position, and 27 (71.1%)-posterior position. 3. In 85 joints (63.4%) of 134, the transcranial condylar position agreed with that of the central MRI view, 10 joints (7.5%)
with that of medial, 16 joints (11.9%) with that of lateral, and 23 joints (17.2%) disagreed with that of MRI.
Conclusion : On MRI, most of the reducible and non-reducible joints showed posterior condylar position.
Transcranial radiographs taken with machine designed for TMJ had better agreement of condylar position with that of MRI. Extremely narrow joint spaces or very posterior condylar positons observed on transcranial radiographs had a little more than fifty percent agreement with those of MRIs. (Korean J Oral Maxillofac Radiol 2007; 37 : 15-8)
키워드
TMJ Disorders;Magnetic Resonance Imaging;Mandibular Condyle
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