One is of pulpectomy plus root filling and root pin.While the other is of self-broken screw pin combined with light-curing resin restoration.

• 方法:根据前牙冠折的不同情况,采用活髓摘除、根管充填、置根管钉或直接置自攻自断螺纹钉,光固化复合树脂即刻美容修复冠折缺损部分。