Stomatological Hospital of Chongqing Medical University, 426 Songshi North Road, Chongqing, China.
Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.
BMC Oral Health. 2022 May 23;22(1):200. doi: 10.1186/s12903-022-02236-9.
This study aimed to compare the age-related positional and morphological characteristics of the temporomandibular joint (TMJ) between individuals with anterior openbite or crossbite and controls.
This multi-cross-sectional comparative study analysed cone-beam computed tomography images of 750 participants, equally divided into the openbite, crossbite, and control groups (OBG, CBG, and CG, respectively). Each group was further divided into five subgroups (8-11 years, 12-15 years, 16-19 years, 20-24 years, and 25-30 years). Measurements of the TMJ included the position of the condyles in their respective fossae and morphology of the condyles and fossae. Data were submitted to statistical analysis. The study adhered to the STROBE Statement checklist for reporting of cross-sectional studies.
Condyles were positioned more posteriorly with increasing age in all groups, and the condylar position was more posterior in the OBG than in the CBG. The articular eminence inclination increased with age in all the groups. There were significant differences in the articular eminence inclination among the three major groups at the age of > 15 years, and the condylar path was flatter in the CBG than in the OBG.
Age-related morphological and positional characteristics of the TMJ differed considerably among OBG, CBG and CG. Contrary to CBG, OBG was found to have relatively posterior condylar position and steeper condylar path.
本研究旨在比较安氏Ⅰ类错颌和安氏Ⅲ类错颌患者与正常人群颞下颌关节（TMJ）的年龄相关位置和形态特征。
本多中心、横断面比较研究分析了 750 名参与者的锥形束 CT 图像，这些参与者被平均分为安氏Ⅰ类错颌组（OBG）、安氏Ⅲ类错颌组（CBG）和正常对照组（CG）。每个组进一步分为五个亚组（8-11 岁、12-15 岁、16-19 岁、20-24 岁和 25-30 岁）。TMJ 的测量包括髁突在各自关节窝中的位置以及髁突和关节窝的形态。数据提交给统计分析。该研究符合 STROBE 报告横断面研究的检查表。
在所有组中，随着年龄的增长，髁突的位置越来越向后，并且在 OBG 中，髁突的位置比在 CBG 中更向后。在所有组中，关节突倾斜度随年龄的增长而增加。在年龄>15 岁的三个主要组之间，关节突倾斜度存在显著差异，并且 CBG 中的髁突路径比 OBG 更平坦。
OBG、CBG 和 CG 之间的 TMJ 年龄相关形态和位置特征有很大差异。与 CBG 相反，OBG 具有相对向后的髁突位置和更陡的髁突路径。
