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目的采用下颌正中矢状面分析面部偏斜患者下颌骨轮廓和位置的对称性,观察其在临床诊疗中的应用效果。方法选取面部偏斜患者45例,根据三维测量结果将患者分为下颌骨轮廓对称组和非对称组;以下颌骨正中矢状面作为参考平面,并利用镜像技术分析下颌骨位置及其轮廓的对称性,制定手术方案;通过Pearson相关性检验分析Me-MSP与下颌左右侧轮廓测量项目间差值的相关性,配对t检验比较下颌骨轮廓非对称组在治疗前后的差异。结果轮廓对称组与非对称组相比,Go-_(lat)-MSP、Me-MSP、MPP3-MSP、MPP7-MSP、MLP3-OP、MLP7-OP、Go-_(inf)-OP差异具有统计学意义(P<0.05);非对称组治疗后与治疗前相比,除Go-_(lat)-MSP外,Me-MSP、MPP3-MSP、MPP7-MSP、MLP3-OP、MLP7-OP、Go-_(inf)-OP差异均有统计学意义(P<0.05);Me-MSP与双侧MPP3-MSP差值呈正相关关系(r=0.684,P=0.001),而与其他的变量差值无相关关系。结论该方法能定量分析下颌骨轮廓和位置的不对称畸形,对于颌部整形有良好的临床指导作用,患者满意度较高。
Objective To analyze the symmetry of mandible contour and position in patients with facial skewness by using the middle mandibular sagittal plane and to observe its clinical application. Methods Forty-five patients with facial deviation were selected. According to the three-dimensional measurement results, the patients were divided into two groups: symmetry group and asymmetry group. The median sagittal plane of the mandible was used as a reference plane, and the position and contour of the mandible Symmetry and surgical plan were established. The correlation between Me-MSP and left and right lateral contour measurement items was analyzed by Pearson correlation test. Paired t-test was used to compare the differences of mandibular contour asymmetry group before and after treatment. Results Profile-symmetric group The Go-lat, MSP, Me-MSP, MPP3-MSP, MPP7-MSP, MLP3-OP, MLP7-OP and Go-inf- (P <0.05). Compared with the pretreatment, Me-MSP, MPP3-MSP, MPP7-MSP, MLP3-OP and MLP7-OP (P <0.05). There was a positive correlation between Me-MSP and bilateral MPP3-MSP (r = 0.684, P = 0.001), but not with other variables No correlation between the difference. Conclusion This method can quantitatively analyze the asymmetry deformity of the mandible and the position of the mandible, which has a good clinical guidance for the plastic surgery of the mandible. The patient satisfaction is high.