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

目总结多处软膜下横切术（MST）癫痫手术发症，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.

摘要目探讨后牵引矫形力方向与上颌腭部位移和应力分布关系。