측두하악관절원판변위 환자에서 나타나는 측방횡두개방사선사진상의 과두위치에 대한 평가
Evaluation of the Condylar Position in the Lateral Transcranial Projection for the Patients with Disc Displacements of the Temporomandibular Joint
이은주, 김달웅, 박종부,
소속 상세정보
이은주 ( ) - 경북대학교 치과대학 구강내과학
김달웅 ( ) - 경북대학교 치과대학 구강내과학
박종부 ( ) - 경북대학교 치과대학 구강내과학
KMID : 0355219980230010045
Abstract
The author assessed the spatial relationships between glenoid fossa of the temporal bone and mandibular condyle from lateral transcranial views of 74 TMJ with disc displacement and 16 TMJ with normal disc-condyle complex by the magnetic resonance image findings. All the subjects were female and also in their 3rd decades. The disc displacement group was subdivided into anterior disc displacement with reduction (ADWR) group and anterior disc displacement without reduction (ADWOR) group. The anterior, superior, and posterior joint spaces as well as .anterior/posterior(A/P) ratio of the space at the. closed jaw position and vertical and horizontal components of the condyle position relative to the arficular eminence-at the open. jaw position were measured from all the subjects and the data were compared among groups.
The result were as follows;
1. The mean posterior joint space of ADWR group was smaller than that of ADWOR group, but there were no
significant differences in anterior and superior joint spaces between any two groups.
2. There showed a tendency of higher AN ratio in ADWR group which meant the condyle of ADWR group was likely
to take posteriorly displaced position.
3. There were higher proportion of neutral condylar position in glenoid fossa in normal group, but higher proportion of posterior condylar position in ADWR group.
4. There were no significant differences in the degree of condyle-fossa concentricity among groups.
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