不同处理方法对瓷面与托槽粘结强度的影响  

Shear bond strength between brackets and porcelain veneers prepared with different methods

作　　者：陈启林[1] 贺红[1] 陈吉华[2] 丁寅[2] 冷卫东[3] 

机构地区：[1]武汉大学口腔医学院 [2]西安第四军医大学口腔医学院 [3]湖北十堰市太和医院

出　　处：《实用口腔医学杂志》2006年第2期233-235,共3页Journal of Practical Stomatology

摘　　要：目的测定不同处理方法对瓷修复体与托槽抗剪强度的影响。方法制作金属烤瓷片,分甲、乙2组,甲组釉面作机械打磨,乙组不作处理。每组都用3种方法粘结托槽。粘结后冷热循环作抗剪强度测试,并记录托槽去除时的瓷崩情况。结果无论甲组或乙组,经酸蚀处理组的抗剪强度均显著高于非酸蚀组(P<0.05);甲组均高于乙组且具有显著性差异(P<0.05)。结论酸蚀处理是促进瓷和托槽粘结的可靠手段,机械打磨能提高其强度,偶联剂在本实验中作用不确定。Objective：To test the effects of different preparation methods on the shear bond strength between porcelain veneers and the brackets. Methods ：48 metal-porcelain veneers were randomly and evenly divided into two groups. The veneers in group 1 were grinded with stone, while others were intact. The veneers were bonded by acid etching,silicone coupler and acid etching combined with silicone coupler respectively. After bonding and 500 thermo cycle treatment, all veneers were submitted to shear bond strength test and the incidence of porcelain fracture was recorded. Results-The shear bond strength of the grinded samples was higher than that of the intact （ P 〈 0.05 ）. The shear bond strength of the acid etched samples was higher than that of the nonetched （ P 〈 0.05 ）. Conclusion：Acid etching and grinding can improve the shear bond strength.

关 键 词：瓷修复体 托槽 抗剪强度 

分 类 号：R783[医药卫生—口腔医学]