Objective To summarize the complications for MST treatment of retractive epilepsy and to improve our treatment.

目的总结多处软膜下横切术（MST）治疗癫痫的手术并发症，并提出新的治疗措施。

Objective The aim of this study was to assess the effects of varying retractive force directions on the displacement of and stress distributions in palate.

摘要目的探讨后牵引矫形力的方向与上颌腭部位移和应力分布的关系。