女性前牙反颅颌面软组织侧貌生长发育的二维有限元法研究——乳牙期到恒牙期与替牙期到恒牙期的比较性研究

目的：通过比较女性前牙反牙合患者乳牙期到替牙期（Ｄ－Ｍ期）与替牙期到恒牙期（Ｍ－Ｐ期）有限元分析结果，探讨软组织局部在不同阶段的生长发育特点。方法：用方差分析进行显著性检验。结果：鼻区与鼻下区在这两个阶段有相似的生长行为；下唇唇珠部在Ｄ－Ｍ期生长变化较Ｍ－Ｐ期明显，而下唇基部生长Ｍ－Ｐ期比Ｄ－Ｍ期明显；颏部软组织在Ｍ－Ｐ期的生长量较Ｄ－Ｍ期减小，以形状变化为主。结论：软组织不同部位在不同生长发育阶段的表现有所差异，在实施矫治时应予以关注。

A comparative study of Two-dimensional finite element analysis of the growth and development of lateral profile of craniofacial soft tissue in female with anterior crossbite from different dentition period

Objective:To analyze growth and development characteristics of local soft tissue by comparing the results of finite element analysis of D M period and M P period of female with anterior crossbite.Method:Two dimentional finite analysis was performed in 82 D M cases and 86 M P cases and the analysis of variance was used.Results:The nose area and sub nose area showed similar growing behavior in D M and M P period.Labial tubercle of the lower lip grew more apparently in D M period than in M P period ,while the basal part of the lower lip grew more apparently in M-P perior than in D M period.The soft tissue of chin grew more apparently in D M period than in M P period. Shape changed more than size .Conclusions:The soft tissues in different parts change differently in deferent growth and development periods.This should be considered for orthodontic treatment.