Methods ?TMJs from six rabbits with occlusal trauma and three control rabbits were studied by transmission electron microscopy.Results?Degenerative changes of TMJ tissues were found.

• 方法?采用实验性（牙合）创伤动物模型，透射电镜下观察（牙合）创伤后颞下颌关节滑膜和软骨的超微结构特征。