后牙嵌盖式固定桥是在针形高嵌体的基础上加以改进的一种固位体。一般针形高嵌体只在基牙预备时于(牙合)面边缘嵴磨出斜面(Bevel),而嵌盖式固位体系将此斜面改成高1.0～1.5mm 的台肩,从而增强了针形高嵌体的固位作用,使之具有冠内冠外固位体的双重效果。嵌盖式固化体的主要优点是固位体的固位作用集 Posterior teeth inlaid fixed bridge is based on the needle-shaped inlay to be improved on a solid body. General needle-shaped inlays only wear out the bevel at the edge of the occlusal surface when the abutment is prepared, and the capping system changes the bevel to a shoulder of 1.0-1.5mm in height to enhance The needle-shaped inlay retention effect, so that it has the crown double crown effect. The main advantage of a capped cured body is the retention set of retainers