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酸蚀对树脂加强型玻璃离子抗剪切强度的影响

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摘要 目的了解酸蚀和免酸蚀两种情况下光固化树脂加强型玻璃离子水门汀的抗剪切强度是否有差别。方法收集离体前磨牙30颗,随机均分为3组。第1组(对照组):35%瞵酸酸蚀30 s,冲洗、干燥,涂粘结剂,京津釉质粘结剂粘结托槽。第2组:35%磷酸酸蚀30 s,冲洗、湿润,光固化型的Fuji OrthoLc树脂加强型玻璃离子粘结托糟。第3组:免酸蚀,湿润,光固化型的Fuji Ortho Lc树脂加强型玻璃离子粘结托槽。24 h后用电子万能力学实验机对3组进行抗剪切强度测定,并统计牙面上的粘结剂残留量。结果第2、3组间差别有显著统计学意义;第1、3组间差别无统计学意义。结论树脂加强型玻璃离子水门汀免酸蚀时其粘结强度能达到临床要求,但是酸蚀后粘结强度明显增高。
出处 《基层医学论坛》 2007年第S1期6-8,共3页 The Medical Forum
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