Methods Sixty-nine patients with 128 pulpless teeth were selected clinical orthodontics, their age span from 18 to 65 years old.

• 方法临床选择69例牙体缺损患者。患牙128颗,年龄18-65岁,采用复合树脂高强纤维根管桩作桩核,金瓷冠修复。