A study about improvment of the conversion rate of dual cure type resin cement with primer containing initiator.

近年来，对美观、自然修复的需求已扩展到后牙的修复。树脂水泥陶瓷材料的发展，使美观的后嵌体修复。然而，有报道称树脂水泥存在磨损问题，并成为造成问题的原因。因此，需要改进树脂水泥，特别是树脂与牙基的粘附性。本研究的目的是探讨自蚀刻底漆中引发剂对树脂材料对牙的粘附性的影响。制备了两种实验性自蚀刻底漆。一种是氨基酸衍生物的水溶液。以一种胺类衍生物作为附着单体和引发剂。另一种是马来酸和HEMA的混合物。氨基酸衍生物促进的拉伸键强度（3.4MPa）高于马来酸- hema混合物促进的拉伸键强度。（1.2MPa）氨基酸衍生物与n -苯基甘氨酸结合使用，树脂转化率高。这一比率随着时间的推移而增加。我们认为氨基酸衍生物在自蚀刻引物中是有效的引发剂和促进剂

The demand for esthetic and natural-looking restoration has been extended to the restoration of the posterior teeth in recent years. The development of resin cement for ceramic materials have enable esthetic posterior inlay restoration. However, it was reported that the wear loss of resin cement was occur and it become cause of the trouble. Hence, the improvement of the resin cement, especially, adhesion of resin to tooth substrates was needed.The purpose of this study was to investigate the effect of the initiator in self-etching primer on the adhesiveness of resin materials to tooth. Two experimental self-etching primer was prepared. the one is aqueous solution of amino acid derivatives. An amine acid derivative was used as adhesion monomer and initiator. The other is the mixture of mareic acid and HEMA.The tensile bond strength promoted by amino acid derivative (3.4MPa) was higher than that promoted by mareic acid-HEMA mixture. (1.2MPa) The conversion rate of resin was high when used with conbination of amino acid derivatives and N-phenylglycine. The rate was increased with the time.We concluded that amino acid derivatives was effective for initiator and promoter in the self etching primer