Objective: the aim of this study was to investigate the features of discs of temporomandibular joints (TMJs), during the joint was in the closing and opening positions.
目的:探讨正常人颞颌关节开、闭口位关节盘的形态变化特点及意义。
2
After been used for 3-4 months, the crucible had serious crack at the joint of the bottom and side closing to the outer flame.