双牙弓前突是正畸临床上较为常见的一种错(牙合)畸形。毛燮均错(牙合)分类法把它归于Ⅱ类5分类[1]。严重的双牙弓前突患者常表现明显的开唇露齿,双唇功能不足,十分有碍于观瞻。给患者造成不良的心理学压力。该错(牙合)畸形的研究,特别是有关的临床矫治,国内国外均报导不多。作者使用细丝弓矫正器对双牙弓前突畸形进行矫治,获得了良好的疗效。 Bilateral arch protrusion is a more common clinical orthodontic a (occlusal) deformity. Mao Xie are wrong (occlusion) classification put it in Ⅱ class 5 classification [1]. Severe bidentata patients often show obvious open lips exposed teeth, lips lack of function, very hinder the view of the eye. Cause unpleasant psychological pressure on the patient. The wrong (occlusal) deformity of the study, especially the clinical corrective, are reported at home and abroad are not many. The author of the use of thin wire braces orthopedic double arch correction, access to a good effect.