Kikuchi K, Takeuchi S, Tanaka E, Shibaguchi T, Tanne K
Kikuchi Orthodontic Office, Mie, Japan.
J Oral Rehabil. 2003 Nov;30(11):1070-5. doi: 10.1046/j.1365-2842.2003.01194.x.
The present study investigated condylar position and joint morphology in adolescent patients and elucidated the possible association between the joint structure and condylar position, and craniofacial morphology. Sixty-five adolescent patients were selected as subjects and their tomograms and lateral cephalograms were analysed. No significant differences in joint spaces were found between the right and left temporomandibular joints. Both the condyles in this population were located slight anteriorly in the glenoid fossa. With respect to the association between condylar position, joint morphology and craniofacial morphology, the ramus plane angle also exhibited significant negative correlations with posterior, lateral and medial joint spaces. Furthermore, there was a significant negative correlation between the gonial angle and the anterior joint space. These findings imply that the condyle was likely to show more posterior position in the glenoid fossa when the mandible exhibited clockwise rotation. In conclusion, the condyle in the adolescent subjects showed a symmetrical anterior position relative to the glenoid fossa. In addition, the joint spaces and it ratios were significantly related to the craniofacial morphology associated with vertical dimension. It is suggested that the condylar position may be affected by craniofacial growth pattern.
本研究调查了青少年患者的髁突位置和关节形态，阐明了关节结构与髁突位置以及颅面形态之间可能存在的关联。选取65例青少年患者作为研究对象，分析其断层扫描图像和头颅侧位片。左右颞下颌关节之间的关节间隙未发现显著差异。该人群的双侧髁突均位于关节窝稍前方。关于髁突位置、关节形态与颅面形态之间的关联，下颌升支平面角与关节后间隙、外侧间隙和内侧间隙也呈现出显著的负相关。此外，下颌角与关节前间隙之间存在显著的负相关。这些发现表明，当下颌骨呈顺时针旋转时，髁突在关节窝内可能更偏向后方。总之，青少年受试者的髁突相对于关节窝呈现出对称的前方位置。此外，关节间隙及其比例与垂直方向相关的颅面形态显著相关。提示髁突位置可能受颅面生长模式的影响。
