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目的通过轻中度安氏Ⅲ错拔牙与非拔牙病例对比颌面软硬组织的变化,探讨两种治疗方案的临界点,以达到最佳治疗效果方法收集青少年轻中度错畸形病例30例,将其随机分为拔牙组和非拔牙组,将两组各15例矫治后的软硬组织投影测量结果进行对比。结果两组的变化量对比只有上前牙轴-FH、下前牙轴-FH、下颌角度有统计学意义。结论提示对轻中度安氏Ⅲ类骨性错,拔牙或非拔牙治疗可能效果差异不大,正畸前期可考虑不拔牙,后期拔牙必须根据X线投影测量及治疗中模型分析预测,面部软组织厚度及侧貌等的影响来综合决定。
Objective To compare the changes of maxillofacial soft and hard tissues between mild and moderate Angle Ⅲ malocclusion with non-extraction and to explore the critical points of the two treatment options in order to achieve the best therapeutic effect. Methods To collect mild and moderate malformation deformities among young people Cases, were randomly divided into extraction group and non-extraction group, the two groups of 15 cases after treatment of soft and hard tissue projection measurement results were compared. Results The comparison of change between the two groups showed that there was only significant difference between the upper anterior teeth axis -FH, the lower anterior teeth axis -FH and the mandibular angle. The conclusions suggest that there may be no significant difference in the treatment of moderate or moderate grade III bony misdiagnosis, tooth extraction or non-extraction treatment. In the early stage of orthodontic treatment, non-extraction may be considered. In the latter stage, the tooth extraction must be based on X-ray projection measurement and treatment model prediction. Soft tissue thickness and contour to determine the impact of comprehensive.