华西口腔医学杂志2013，Vol.31Issue(4)：335-340,6.DOI:10.7518/hxkq.2013.04.002
酪蛋白磷酸肽-无定形磷酸钙对牙本质粘接界面耐pH循环老化的影响
Effect of casein phosphopeptide-amorphous calcium phosphate on the stability of resin-dentin bonds against pH cycling
摘要
Abstract
Objective To investigate the effect of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP)on the stability of resin-dentin bonds against pH cycling.Methods Resin-bonded dentin specimens were prepared following manufacturers' instructions,and randomly divided into 3 groups.Among them,2 groups experienced pH cycling,in which specimens applied CPP-ACP or distilled and deionized water (DDW) on the bonding interface,respectively.Microtensile bond strength (μTBS) testing,failure mode analysis,micromorphological and nanoleakage evaluation of bonding interface and elemental analysis within hybrid layer were performed after 15 days pH cycling.The other group was tested immediately after specimens' preparation without pH cycling.Results No significant differences were found in μTBS between no pH cycling and pH cycling/CPP-ACP group.Their μTBS were both significantly higher than that of pH cycling/DDW group (P＜0.05).Mixed fractures were the most prevalent failure mode.The quality of hybrid layer in pH cycling/CPP-ACP group was better than that of pH cycling/DDW group,and the nanoleakage was also less severe.Comparing with pH cycling/DDW group,the atomic percentages of Ca in the other two groups were both significantly higher,while those of Ag were statistically lower (P＜O.05).Conclusion Local application of CPP-ACP can promote the stability of resin-dentin bonding interface against pH cycling and prolong bonding degeneration.关键词
酪蛋白磷酸肽-无定形磷酸钙/树脂-牙本质粘接/再矿化/粘接强度/纳米渗漏Key words
casein phosphopeptide-amorphous calcium phosphate/ resin-dentin bond/ remineralization/ bond strength/ nanoleakage分类
医药卫生引用本文复制引用
唐成芳,窦祈,刘瑞瑞,柴治国,沈丽娟,方明,陈吉华..酪蛋白磷酸肽-无定形磷酸钙对牙本质粘接界面耐pH循环老化的影响[J].华西口腔医学杂志,2013,31(4):335-340,6.基金项目
国家自然科学基金资助项目(81000458,81130078) （81000458,81130078）
