Construction of bonding system by using total self-etching primer

本研究的目的是开发全自酸蚀底漆，以提高光固化复合树脂与抛光牙釉质和牙本质的粘结强度。制备了以邻苯二甲酸氢2-丙烯酰氧乙酯（2AEP）为主要成分的二元全自酸蚀底漆，评价其粘接效果。对于Scotchbond Multipurpose和PhotoBond，尽管与抛光牙釉质和牙本质相比，含有2AEM和2AEC的全自酸蚀底漆改善了粘结强度，但含有2AES和2AEP的全自酸蚀底漆没有改善粘结强度。然而，与用水冲洗10秒的牙本质的粘结强度。然后以甲基丙烯酸2-羟乙酯（HEMA）、N-羟甲基甲基丙烯酰胺（MEMA）、N-羟甲基丙烯酰胺（MEAA）三种丙烯酸酯单体为添加主成分，分别加入2AEM或2AEC和水，制成三组分全自酸蚀底涂剂，使其粘接强度比二元体系提高。对于Scotchbond Multipurpose和PhotoBond，含有MEAA和二元体系的三组分全自酸蚀底漆显著提高了与牙本质的粘结强度。对于Scotchbond Multipurpose，两种总的自酸蚀处理剂{（10wt%2AEM，40wt%MEAA和50wt%水），（25wt%2AEM，25wt%MEAA和50wt%水）}即使减少处理时间也不会降低处理效果。虽然对于Scotchbond Multipurpose、photoBond和LB Bond，总自酸蚀底漆（10wt%2AEM，40wt%MEAA和50wt%水）改善了粘结强度，但是对于MAC-BOND和FB BOND，处理效果较低。

The purpose of this study was to develop the total self-etching primer to improve the bond strength of light-cured composite resin to polished enamel and dentin.First four acrylate monomers {2-acryloyloxyethyl hydrogen maleate (2AEM), 2-acryloyloxyethylhydrogen citraconate (2AEC), 2-acryloyloxyethyl hydrogen succinate (2AES), 2-acryloyloxyethyl hydrogen phtarate (2AEP) } were prepared for principal ingredient of binary total self-etching primer to evaluate the effect on bonding. For Scotchbond Multipurpose and PhotoBond, although the total self-etching primer contained 2AEM and 2AEC improved the bond strengths compared to those to polished enamel and dentine, the total self-etching primer containing 2AES and 2AEP did not improve the bond strength. However, the bond strengths to dentine rinsed with water for 10 sec. after applying the total self-etching primer were lower than those to treated dentine.Then the three acrylate monomers {2-hydroxyethyl methacrylate (HEMA), N-methylol methacrylamide (MEMA), N-methylol acrylamide (MEAA) } were used as additional principle ingredient of three component total self-etching primer containing 2AEM or 2AEC and water to improve the bond strength more than those obtained by using binary systems. For Scotchbond Multipurpose and PhotoBond, the three component total self-etching primers contained MEAA and binary systems remarkably improved the bond strength to dentine. However, the bond strength to enamel decreased by adding MEAA.For Scotchbond Multipurpose, the two total self-etching primer { (10wt% 2AEM,40wt% MEAA and 50wt% water), (25wt% 2AEM,25wt% MEAA and 50wt% water) } did not decreased efficacy of treatment even if applying time reduced. Although for Scotchbond Multipurpose, photoBond and LB Bond, the total self-etching primer (10wt% 2AEM,40wt% MEAA and 50wt% water) improved the bond strength, for MAC-BOND and FB BOND,efficacy of treatment was low.