【摘 要】
：
目的:通过对已完成正畸治疗的临床病例分析,探讨错(牙合)畸形病例的最佳矫治时机.方法:选择64例临床已完成矫治的错(牙合)畸形病例进行分析比较,在其中选择32例仅有第二乳磨
【机 构】
：
达州市中心医院口腔科,四川,达州,635000
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目的:通过对已完成正畸治疗的临床病例分析,探讨错(牙合)畸形病例的最佳矫治时机.方法:选择64例临床已完成矫治的错(牙合)畸形病例进行分析比较,在其中选择32例仅有第二乳磨牙未替换(以下简称准恒牙列期)开始矫治的患者作为实验组,余下的32例在恒牙列期实施矫治的患者作为对照组.所有病例均采用方丝弓矫治技术,通过拔牙率[1]疗程、强支抗使用率三个方面,进行分析,比较有何差异.结果:实验组拔牙率为25%,对照组为37.5%;平均疗程实验组为16个月,对照组为15月;实验组强支抗使用率为6.25%,对照组为125%.结论:错(牙合)畸形的矫治选择在准恒牙列期较在恒牙列期有一定的优势,降低了拔牙率和强支抗使用率.
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