Tooth displacement is a common clinical finding.
牙移位是最常见的临床表现。
Since pulp injuries are reported in tooth fracture, displacement and avulsion, it is commonly thought that pulp injuries were involved in almost every type of dental injuries.
牙髓组织损伤可存在于牙齿折断、牙齿移位和牙齿全脱臼。
PURPOSE: to study the stress variation and distribution of the periodontium and the tooth initial displacement when the lingual fixate forces were applied to the depressed periodontal height.
目的：研究牙周支持高度降低状态下施加舌向集中力时，牙周组织的应力变化、分布规律和牙的初始位移。
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