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用钉固位修复牙体缺损,虽然已生产出一套专用器材,但数量不多,而且常不配套,普遍推广应用受到限制。作者采用简单实用的方法,有粘固固位钉和螺纹固位钉两种,粘固固位钉直径1mm 以下,表面有加强固位的刻痕,用口腔矫形科不锈钢丝自制。用螺旋形钻针在牙本质上制造钉道,直径1mm,深2～3mm。借助于磷酸水门汀粘固。螺纹固位钉,以钟表用螺纹钉为代用品,将其顶端磨成铲形,直径0.75和1.15mm,制造的钉道直径为0.7和1.1mm。为把螺纹钉拧入钉道内,自
With the nail retention of the repair of dental defects, although it has produced a set of special equipment, but a small number, and often not supporting, the general promotion and application is limited. The author uses a simple and practical method, there are two kinds of adhesive retention screw and screw retention, fixation retention nail diameter of 1mm or less, the surface has reinforced the indentation, orthodontic stainless steel wire homemade. With spiral drill pin dentures in the manufacture of nails, diameter 1mm, deep 2 ~ 3mm. With phosphoric acid cement bonding. Thread retention nails to the clock with the screw as a substitute, the top ground shovel-shaped, diameter 0.75 and 1.15mm, made of nail diameter 0.7 and 1.1mm. To screw the nail into the nail, since