Effect of Components of Dentin primer and Bonding agent on the Resin-Dentin Bonding.

自1984年以来，Munksgaard和Asmussen报道使用一种欺骗剂EDTA代替磷酸来部分去除涂抹层，然后用35%的甲基丙烯酸羟乙酯（HEMA）和5%的戊二醛预处理牙本质表面，以增加树脂与牙本质的结合强度。牙本质粘接剂的发展经历了几代粘接剂。最近，为了简化树脂粘合，将苯基- p等酸性调理剂与HEMA引物结合，制成了几种新产品，称为自涂引物。这些牙本质粘接系统的所有组件都以不同的机制设计，以提高粘接强度，并建议仔细遵守所有制造商的说明。牙本质粘接系统各组成部分对牙齿粘接的影响目前还不清楚。本研究采用不同组合的牙本质粘接系统，对新拔牙无龋的人磨牙和门牙表面进行涂覆层牙本质和抛光牙釉质表面的涂饰，研究调理剂、引物和粘接剂对牙齿粘接的影响。结果表明，酸性调理剂是牙本质结合系统的必要条件，含胶粘剂的底漆和粘结剂可能有助于提高牙本质的结合强度。

Since 1984, Munksgaard and Asmussen reported using a chealating agent, EDTA,instead of phosphoric acid, to partially remove the smear layr followed by pretreatment of the dentin surface with 35% hydroxy-ethyl-methacrylate (HEMA) and 5% glutaraldehyde, to increase resin-dentin bonding strength. The development of dentin bonding agents has gone through several generations of adhesive agents. Recently, for the purpose of simplifying resin bonding, several new products were made by combining acidic conditioners such as Phenyl-P with HEMA primers to create what are called self-erching primers. All the components of these dentin bonding systems are designed in different mechanism to enhance the bonding strength, and careful observance of all the manufacturers'directions is also recommended. The effect of each component of dentin bonding systems on the tooth bonding has so far been unclear in detail.In this report, different kinds of dentine bonding systems, were used in various combinations to smear-layr-covered-dentin and polished-enamel surfaces of freshly extracted caries-free human molars and incisors to investigate the effects of the conditioners, primers and bonding agents on the tooth bonding.The results indicate that acidic conditioners are necessary for dentin bonding system, adhesive-containing primer and bonding agent might contribute to a higher bond strength.