检索历史 清除

目的：探讨高强度玻璃陶瓷全瓷冠修复治疗隐裂牙综合征的临床效果。方法选择有咬合痛、冷热刺激痛、经修复科和牙体牙髓科联合确诊为隐裂牙综合征的患者36例，共42颗患牙。采用微创牙体预备结合高强度全瓷冠修复隐裂牙，并长期追踪临床修复治疗效果。结果采用全瓷冠修复的隐裂牙，修复后1周29例（81%）患者疼痛消失，3例有咬合痛和酸痛，3例有咬合痛，1例有冷热刺激痛现象。修复后1个月仅2例患者咬合不适，其中1例仍有冷热刺激痛；修复后5个月1例因牙体牙髓炎进行根管治疗，另1例咬合不适症状消失。所有全瓷冠修复10年中仅2件（5%）全瓷冠瓷折，40件（95%）全瓷修复患牙临床检查未见异常表现，X线片显示牙周及根尖组织均正常。结论高强度全瓷冠修复隐裂牙可防止牙体折裂，保存患牙，保持牙列的完整性，具有美观、舒适等优点。

Objective To evaluate the clinic performance of high strength glass ceramic crowns for the painful cracked teeth during a 10-year observation period. Methods Forty-two posterior teeth from 36 patients were diagnosed as having a crack, biting painful and sensitivity to cold were selected in the Department of Prosthodontic, Institute and Hospital of Stomatology, Nanjing University Medical School. The lost-wax hot pressed glass ceramic crowns were bonded on the minimally invasive prepared teeth by modern adhesive technology. Patients were interviewed and went through clinic examination after one week, one month, and every six months. Results The effectiveness of 42 glass ceramic crowns for cracked teeth was evaluated for a mean observation time over 10-year. At the first week, 29(81%) patients were free of pain, three still had sensitivity to cold and chewing pain, three still had sensitivity to cold, one had painful to cold and hot. After one month, two patients still had chewing pain, and one tooth needed endodontic treatment after six months. In 10 years, 2(5%) all ceramic crowns were broken, the other 40 restorations kept good clinical performances with a 10-year survival rate of 95%. Conclusions The high strength glass ceramic crowns are very effective and successful in treating the cracked teeth and then keep the good mastication function and appearance.