冠根斜折至龈下行龈切修整后桩冠修复80颗

目的：探讨保留冠根斜折至龈下3 mm以内的患牙,避免拔除患牙后对健康邻牙的损伤,牙槽骨塌陷对美观的影响.方法：对80颗冠根斜折至龈下3 mm以内的患牙,做完善的根管治疗,行龈成型术后暴露根面,4周后做桩冠修复.随访2.5年按前后牙分两组讨论.结果：30颗前牙冠根斜折桩冠修复的患牙经2.5年临床观察成功率93.3%.50颗后牙成功率88%.结论：对冠根斜折的患牙保留其牙根修复后,恢复正常咀嚼功能,避免对健康邻牙的损伤,前牙更可恢复唇面的美观功能,减少做固定桥、活动义齿、种植义齿带来的不适和经济负担.

Using Post Crown to Restore 80 Pills of Teeth with Crown and Root Fracture under Gingiva after Gingivoplasty

Objective: To avoid the affection of the injury to the healthy orth-teeth and the beauty because of the absorption of the alveolar bone after the teeth extraction,by remaining teeth with crown and root fracture under gingiva within 3 mm.Methods: Eighty pills of teeth with crown and root fracture under gingiva within 3 mm were treated with perfect root canal therapy,then with gingivoplasty.The surface of the root were exposed, and post crown were repaired 4 weeks later.Followed up 2.5 years,the resultes divided into anterior teeth and posterior teeth were discussed.Results: After 2.5 years,93.3% of 30 pills of anterior teeth and 88.8% of 50 pills of posterior teeth with crown and root fracture have got achievement after post crown restoration.Conclusion: After restoration the remaining root of the teeth with crown and root fracture,the teeth can regain normal masticatory function,avoid the injury to healthy orth-teeth,and the anterior teeth can better restore the beauty of the labial,and reduce the uncomfortable and economy burden because of fixed partial denture,removal partial denture and implanted supported denture restoration.