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.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2006年第2期233-235,共3页
Journal of Practical Stomatology
关键词
瓷修复体
托槽
抗剪强度
Porcelain veneer
Bracket
Shear bond strength
