磨牙因为非单根,根管多,相互之间一般不平行,根分叉大,在对磨牙残根、冠修复时存在着如何作桩的问题。国内外许多人采用了不同的方法进行修复,如在根管内钻入螺钉,在其上作银汞或树脂核,也有使用铸造桩加桩钉的方法,口内作桩后取模口外作核的方法,两核分先后戴入,并附有制锁装 Molars because of non-single root canal, root canal and more generally not parallel with each other, root bifurcation, the residual roots in the molar, the crown there is the problem of how to build a pile. Many people at home and abroad have adopted different methods to repair, such as drilling screws in the root canal, on which silver mercury or resin core, but also the use of cast piles plus pile method, the mouth of the stump after taking the mold core Approach, two nuclear points have worn, and attached to the system lock