AimTo evaluate the clinical effect of the restoration using prefabricated screw post, light-cured composite resin core and porcelain-fused-to-metal crown for residue crown and residue root.
目的总结螺纹根管钉、光固化树脂核、金属烤瓷全冠修复残根残冠的临床经验。
2
The complications not related to screw malposition were 2 pedicle fractures (2% of patients), 1 nerve root injury (1%), and 1 dural laceration (1%).
与误置钉无关的并发症有：2例(2%)椎弓根骨折，1例(1%)神经根损伤，1例(1%)硬膜撕裂。
3
The basic principle is though three root ball screw control platform, by the measurement of nozzle, three motor to adjustable height accordingly, easily implemented leveling!