成人面下部软硬组织不对称性的相关性研究

Study on the correlation of the lower facial asymmetry in adults with soft and hard tissues

目的使用锥形束CT(CBCT)探讨成人面下部软硬组织不对称性之间的相关性。方法选取25例面部不对称的成人患者进行三维重建,对选取的13个软硬组织标志点进行定位,计算不对称指数(asymmetry index,AI)。将软硬组织标志点的AI进行两变量相关性分析求相关系数,再对软硬组织标志点的AI进行配对t检验,分析其差异。结果硬组织标志点中,UI最低,Go最高;软组织标志点中,Ls最低,Go'最高。LI与Ls、Li、Pog'、Me'、Ch、Go'之间,Pog与Li、Pog、Me'、Ch之间,Me与Li、Pog、Me'、Ch之间,LFM与Li、Pog"Me'、Ch、Go'之间,Go与Pog'、Me'、Go'之间的AI呈正相关(P<0.05),UI及UFM与各软组织标志点均无相关性(P>0.05)。Pog与Pog、Me与Me'、LFM与Ch、Go与Go'差异有统计学意义(P<0.05)。结论面下部软硬组织不对称总体呈现从上到下、从中间到两侧逐渐增大的趋势,软组织可以在一定程度上掩饰硬组织的不对称。

Objective The aim of the study was to discuss the correlation between lower facial hard and soft tissues with CBCT.Methods Twenty-five adult patients with facial asymmetry were selected.3D reconstruction was done with Dolphin software.Thirteen hard and soft tissue landmarks of these patients were located.Asymmetry index(AI)was calculated.AI of soft tissue versus hard tissue landmarks was subjected to bivariate correlation analysis.Differences in asymmetry between sites corresponding to soft and hard tissue landmarks were analyzed using paired t-tests on AI between soft and corresponding hard tissue landmarks.Results Among the hard tissue landmarks,UI was the lowest and Go was the highest.Among soft tissue landmarks,Ls was the lowest and Go'was the highest.There is a positive correlation of AI between LI and Ls、Li、Pog'、Me',Ch.Go',Pog and Li、Pog'、Me'、Ch,Me and Li、Pog'、Me'、Ch,LFM and Li、Pog'、Me'、Ch、Go',Go and Pog'、Me'、Go'(P<0.05).UI and UFM have no correlation with soft tissue markers(P>0.05).The difference between Pog and Pog',Me and Me',LFM and Ch,Go and Go'was significantly different(P<0.05).Conclusion The asymmetry of soft and hard tissue in the lower face gradually increases from top to bottom and from middle to both sides;Soft tissue can disguise the asymmetry of hard tissue to some extent.