不同桩冠预防重度楔状缺损牙冠折的疗效比较研究  

Clinical research on using cobalt-chromium alloys and fiber post to prevent fracture of dental crown with severe wedge-shaped defect

作　　者：李鸿飞[1] 

机构地区：[1]江苏省如皋市人民医院口腔科,如皋226500

出　　处：《口腔医学》2011年第8期474-475,共2页Stomatology

摘　　要：目的铸造钴铬合金桩、纤维桩运用于重度楔状缺损前牙、前磨牙,防止冠折发生的疗效观察。方法选择已露髓的重度楔状缺损病例131例、282颗楔状缺损患牙进行了研究,分为A、B2组。A组109颗重度楔状缺损牙,采用铸造钴铬合金桩、钴铬合金烤瓷冠修复;B组173颗重度楔状缺损牙,采用玻璃纤维桩、钴铬合金烤瓷冠修复。结果随访1～5年,A组成功97例,失败12例;B组成功169例,失败4例。结论玻璃纤维桩与牙本质的弹性模量比较接近,用于重度楔状缺损牙,能有效地防止冠、根折的发生,效果优于铸造钴铬合金桩,铸造钴铬合金桩弹性模量相对较大,少数病例可发生根折。Objective To observe the clinical efficacy of using cobalt-chromium alloy cast post and fiber post to treat wedge-shaped defects of severe anterior teeth,premolars to prevent crown fracture.Methods 131 patients（282 teeth） who had severe exposed pulp wedge-shaped defect were studied,and they were divided into A,B groups radomly.Patients in group A（109 teeth） were treated with cast cobalt-chromium alloy post,cobalt-chromium alloy handcuffed ceramic crowns;Patients in group B（173 teeth） were treated with glass fiber post,cobalt-chromium alloy handcuffed ceramic crowns.Results Follow-ups for 1~5 years showed that the success rates of two groups were 97/109,169/173.Conclusions Glass fiber post and dentin have similar elastic modulus.It＇s suited for severe dental wedge-shaped defects,which can effectively prevent the crown fracture,and it is better than the cobalt-chromium alloy cast posts.Cobalt-chromium alloy has relatively higher elastic modulus,and a few cases of root fracture may occur.

关 键 词：钴铬合金桩 纤维桩 楔状缺损 冠、根折 

分 类 号：R783.3[医药卫生—口腔医学]