对于后牙牙冠全部缺损文献记载采用多桩桩冠修复,此法有利于保留残根、较好地解决了修复体固位问题。但是,常常在修复体表面作全冠,且桩降低了修复体抗压强度。笔者根据建筑工程学中钢筋混凝土结构原理,即在混凝土中加入钢筋结构以增强水泥抗弯强度从而发挥混凝土抗压强度大的特点这一原理,设计了框架结构用于修复牙冠大部缺损,近年来又将这种理论用于修复后牙牙冠全部缺损,并将这种方 For the full defect of the posterior teeth crown using multi-pile crown repair, this method is conducive to the retention of residual roots, a better solution to the problem of prosthesis retention. However, crowns are often made on the prosthesis surface and the piles reduce the compressive strength of the prosthesis. Based on the principle of reinforced concrete structure in construction engineering, that is, adding reinforced structure to concrete to enhance the flexural strength of concrete to exert the characteristics of large compressive strength of concrete, the frame structure is designed to repair most defects of the crown, In recent years, this theory has been used to repair the entire defect of the posterior tooth crowns, and this side