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。
3
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.