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目的:研究AngleⅡ类1分类错患者软组织在矫治前、后的变化,以期为临床正畸治疗对面部软组织侧貌的美学评估提供参考与指导。方法:应用X线头影测量技术对20例AngleⅡ类1分类错的患者进行矫治前、后的软组织测量,并对矫治前后的变化量进行统计学分析。结果:矫治前后患者上唇到审美平面距离(TUL-EP)、下唇到审美平面距离(TLL-EP)、下唇H线距均有明显减小(P<0.05或P<0.01),鼻唇角(Cm-Sn-UL)、面凸角(G-Sn-Pg’)增大(P<0.05或P<0.01),颏部软组织厚度变化差异无统计学意义(P>0.05)。结论:AngleⅡ类1分类错患者通过正畸矫治后,患者鼻唇颏部发生一定程度的变化,使面部侧貌趋于协调美观。
OBJECTIVE: To study the changes of soft tissue in Angle Ⅱ class 1 malocclusion patients before and after treatment, in order to provide reference and guidance for the aesthetic evaluation of facial soft tissue profile in clinical orthodontic treatment. Methods: Twenty patients with Angle Ⅱ class 1 malocclusion were measured by X-ray cephalometry before and after treatment. The changes of the soft tissue before and after the treatment were analyzed statistically. Results: Before and after treatment, the distance from upper lip to aesthetic plane (TUL-EP), lower lip to aesthetic plane distance (TLL-EP) and lower lip H line distance were significantly decreased (P <0.05 or P <0.01) Cm-Sn-UL and G-Sn-Pg ’(P <0.05 or P <0.01). There was no significant difference in chin soft tissue thickness between the two groups (P> 0.05). Conclusion: Angle Ⅱ class 1 malocclusion patients through orthodontic treatment, the patient’s nasal lip chin a certain degree of change, the facial profile tends to be beautiful and coordinated.