自攻自断螺纹钉在大面积缺损牙保存性修复中的应用

Study of self-threading pins in the preservative restoration of teeth with large area defects

目的 :探讨自攻自断螺纹钉在大面积缺损牙保存性修复中的应用。方法 :采用自攻自断螺纹钉 ,选择凡因龋坏或者外伤使牙体组织损失残缺过大、牙髓未露、活力正常的牙进行修复。结果 :本组 5 0例经自攻自断螺纹钉进行固位修复 ,5年后随访 42例 ,除 2例因上颌磨牙牙尖折断而不能修复拔除外 ,其它 40例均达到评判标准 ,总成功率达 95 %。结论 :自攻自断螺纹钉主要用于对严重缺损而牙髓健康的牙进行保存性修复 ,还可对要做壳冠修复的牙进行牙壁加固。该方法因材料来源方便 ,临床效果显著 ,值得推广。

Objective To investigate the application of self-threading pins in the preservative of teeth with large area defects. Methods A follow up study of 42 out of 50 patients with large area defects in vital teeth were restored by self-threading pins. Results Among the cases that had been followed up for 5 years, except 2 upper molars which were extracted because of fraction, other cases achieved good effects. Conclusion Self-threading pins are very suitable to restore large area defects of teeth with healthy pulp, and can be widely used because of significant clinical effects.