前牙深覆牙合、深覆盖是常见的错牙合畸形 ,多出现在替牙期及恒牙期 ,常伴有开唇露齿、凸面型及面下1 /3较短 ,影响美观及生理功能 ,其咬合的打开颇为棘手。自 1 998年 3月至 1 999年 1 2月 ,我们采用多用途弓技术实现前牙的压低 ,取得满意疗效 ,现报告如下。1　临床资料1 .1　 Deep overbite anterior teeth, deep coverage is a common malocclusion, mostly in the period of dentition and permanent teeth, often accompanied by open-air tooth exposed, convex type and surface under 1/3 is shorter, affecting the appearance and beauty Physiological function, its occlusion is quite difficult to open. From March 1998 to January 1999, we adopted a multi-purpose bow technique to reduce the anterior teeth and achieved satisfactory results. The report is as follows. 1 clinical data 1 .1