Carlton Kevin L, Nanda Ram S
Department of Orthodoontics, College of Dentistry, University of Oklahoma, Oklahoma City, 73190, USA.
Am J Orthod Dentofacial Orthop. 2002 Nov;122(5):486-90. doi: 10.1067/mod.2002.128863.
The purpose of this follow-up prospective longitudinal study was to determine what changes occurred in the condyle/fossa relationship after treatment. Orthodontic posttreatment records, including corrected tomograms of 106 white patients (58 Class I and 48 Class II Division 1), from a pretreatment sample of 232 patients, were analyzed. The average pretreatment age was 13.6 +/- 3.0 years. The average length of treatment was 2.3 +/- 0.6 years for the Class I group and 2.8 +/- 0.9 years for the Class II Division 1 group. With orthodontic treatment, the condyle became more concentrically positioned, and a significant (P <.05) decrease in left and right anterior, posterior, and superior joint spaces was observed in most subjects. There was no statistically significant correlation between changes in the condyle/fossa relationship based on age, gender, skeletal or dental variables, signs or symptoms of temporomandibular disorder, headgear use, type of elastics, or nonextraction vs extraction treatment.
这项随访前瞻性纵向研究的目的是确定治疗后髁突/关节窝关系发生了哪些变化。对来自232例患者的预处理样本中的106例白人患者（58例I类和48例II类1分类）的正畸治疗后记录进行了分析，包括校正后的断层扫描。预处理的平均年龄为13.6±3.0岁。I类组的平均治疗时长为2.3±0.6年，II类1分类组为2.8±0.9年。通过正畸治疗，髁突的位置变得更加同心，并且在大多数受试者中观察到左右前、后和上关节间隙显著（P<.05）减小。基于年龄、性别、骨骼或牙齿变量、颞下颌关节紊乱的体征或症状、头帽使用、弹力牵引类型或非拔牙与拔牙治疗，髁突/关节窝关系的变化之间没有统计学上的显著相关性。
