严重的牙体缺损的修复,在临床上属于疑难病症,目前国内外多采用24K纯金自攻自断螺纹固位钉(简称牙本质钉)或根管钉修复。但其对牙体自身条件要求较高。否则钉道过短,充填物易脱落,且牙本质钉易造成牙齿的微裂,导致牙折。加之造价高,在我国基层医院条件有限,难以推广普及。笔者采用口矫专用不锈钢丝自行弯制不同支架,再用光固化复合树脂或银汞合金充填的方法修复169例,随访三年,疗效甚佳,现介绍如下。 Serious tooth defect repair, clinically difficult problems, at home and abroad to use more self-tapping 24K gold thread retention screw (referred to as dentin nail) or root canal nail repair. But its own requirements of the tooth itself is higher. Otherwise, the nail is too short, the filling material is easy to fall off, and the dentin nail can easily cause micro-cracking of the tooth, resulting in a tooth fracture. Coupled with the high cost of grass-roots hospitals in our country is limited, it is difficult to promote popularization. I used the mouth straightening special stainless steel wire bending their own stent, and then light-cured composite resin or amalgam filling method to repair 169 cases, followed up for three years, the effect is very good, are described below.