冠根斜折至龈下行龈切修整后桩冠修复80颗

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

目的:探讨保留冠根斜折至龈下3 mm以内的患牙,避免拨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。

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 3mm. 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 re- maining root of the teeth with crown and root fracture, the teeth can regain normal masticatory function, avoid the injury to healthy orthteeth, and the anterior teeth can better restore the beauty of the labial, and reduce the uncomfortable and economy burden because of fixed nartlai denture. removai partial denture and implanted sunpported denture restoration.