摘要
目的比较三种不同桩核系统修复喇叭口根管后的抗折性能。方法选择30颗因正畸拔除的下颌第一前磨牙,常规根管治疗后截冠形成喇叭口状外形。随机分成3组,分别行钴铬合金、单支纤维桩、纤维主辅桩桩核冠修复。将所有样本包埋后,用电子力学试验机施加载荷,进行抗折性能测试。结果牙根抗折强度钴铬合金组小于单支纤维桩组和纤维主辅桩组(P<0.05),单支纤维桩组小于纤维主辅桩组(P<0.05)。结论在喇叭口根管修复中,应用纤维主辅桩组修复临床效果较好。
Objective : To compare the fracture resistance of flared root canal restored with three different post systems. Methods: Thirty extracted mandibular premolars were endodontically treated before crown truncation, and then were ran- domly divided into three groups. Each group teeth were restored with Co-Cr alloy, alone fiber and fiber post combined with accessory post systems differently. The fracture resistance test was done with universal material testing machine by all the specimens. Results: The fracture resistance strength of flared root canal teeth restored with Co-Cr alloy systems group was lower than fiber alone and fiber post combined with accessory post( P 〈 0. 05 ), fiber alone was lower than fiber post com- bined with accessory post(P 〈 0.05 ). Conclusion: The fiber post combined with accessory post is recommended in flared root canal tooth restoration.
出处
《泰山医学院学报》
CAS
2016年第5期487-488,共2页
Journal of Taishan Medical College
基金
中国博士后科学基金面上资助(2012M512141)
关键词
桩核
喇叭口根管
抗折性能
post and core
Eared root canal
fracture resistance