根管治疗后下颌切牙瓷贴面与全瓷冠两种修复方式的抗折裂性对比研究  

Comparison of Fracture Resistance of Mandibular Incisor Restored with Porcelain Veneers and All-ceramic Crowns after Root Canal Treatment

作　　者：陈世炜 伍晓红[1] CHEN Shiwei;WU Xiaohong(Stomatological Hospital, Fujian Medical University, Fuzhou 350002, China)

机构地区：[1]福建医科大学附属口腔医院,福建福州350001

出　　处：《口腔医学研究》2020年第3期269-272,共4页Journal of Oral Science Research

基　　金：福建省卫计委青年基金项目(2015-1-69)。

摘　　要：目的:比较根管治疗后下颌切牙瓷贴面与全瓷冠修复后的抗折裂强度。方法:选择离体下颌切牙30颗,统一经过体外根管治疗,3M纤维桩加固后随机分为3组:瓷贴面修复组、全瓷冠修复组(经牙体预备后采用IPS e.max Press铸瓷系统进行修复)和树脂充填组(直接采用复合树脂充填)。在万能材料试验机上分别测试3组样本的抗折裂载荷值,对结果进行统计分析。结果:瓷贴面组、全瓷冠组、直接充填组的抗折裂载荷分别为(439.59±56.97)N、(719.98±43.03)N和(597.74±50.35)N,各组值之间存在统计学差异(P<0.01)。结论:根管治疗后下颌切牙经纤维桩加固后,全瓷冠修复后的抗折裂强度高于瓷贴面修复。二者的抗折裂载荷值都可以满足临床修复的要求。Objective:To compare the fracture resistance of mandibular incisor restored with porcelain veneers and all-ceramic crowns after root canal treatment.Methods:Thirty isolated mandibular incisors were selected and treated by external root canal treatment.After 3M fiber post reinforcement,they were randomly divided into three groups.The porcelain veneer group and the all-ceramic crown group were restored with IPS e.max Press.The resin filling group was directly filled with composite resin.The fracture resistances of three groups were tested with a universal material testing machine.Results:The fracture resistances of porcelain veneer group,all-ceramic crown group,and direct filling group were(439.59±56.97)N,(719.98±43.03)N,and(597.74±50.35)N,respectively(P<0.001).Conclusion:After root canal treatment,the mandibular incisors restored with all-ceramic crown had higher fracture resistance.Both all-ceramic crown and veneer can meet the requirements of clinic.

关 键 词：下颌切牙 瓷贴面 全瓷冠 抗折裂强度 

分 类 号：R78[医药卫生—口腔医学]