단층 및 두부 방사선 계측사진을 이용한 부정 교합자의 악관절에 관한 연구
A STUDY OF THE TEMPOROMANDIBULAR JOINT IN MALOCCLUSION USING TMJ TOMOGRAM AND CEPHALOGRAM
홍순창, 유영규,
소속 상세정보
홍순창 ( Hong Soon-Chang ) - 연세대학교 치과대학 교정학교실
유영규 ( Ryu Young-Kyu ) - 연세대학교 치과대학 교정과학교실
KMID : 0361919920220010089
Abstract
The purpose of this study was to investigate the difference between normal and malocclusion subjects in Temporomandibular joint. This study was based on the 44 subjects with normal occlusion, 30 subjects with Class Ⅱ malocclusion, 30 subjects with Class Ⅲ malocclusion before treatment. After submental vertex view analysis, each subject was given the TMj Tomogram in centric relation and centric occlusion and the Cephalogram was taken with Quint Sectograph. The TMJ spaces were measured and analyzed statistically. Following results were obtained. 1.When centric relation was compared to centric occlusion, the condyles were positioned more posteriorly and superiorly in centric relation position of the normal occlusion group and the class Ⅱ malocclusion group. In the Class Ⅲ malocclusion group. There was no significant difference in the condylar position between centric occlusion and centric relation. 2.The condyles of the Class Ⅲ malocclusion group were positioned more superiorly than the normal occlusion group and the Class Ⅱ malocclusion group. 3.In the correlation between articular eminence posterior slope angle and lingual slope angle of the upper anterior central incisor, there was significant correlation in the normal occlusion group. But no significant correlation was found in the malocclusion group. 4.The mean value of the horizontal angulation of condylar head to the transear rod axis plane was 20.32。±8.12。 in the normal occlusion group, 25.08。±4.83。 in the class Ⅱ malocclusion group, 14.68。 ± 4.08。 in the class Ⅲ malocclusion group.
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