Ohhashi M, Chigira H, Itoh K, Hisamitsu H, Wakumoto S
Department of Operative Dentistry, Showa University School of Dentistry, Tokyo, Japan.
J Dent. 1997 Mar;25(2):161-6. doi: 10.1016/s0300-5712(96)00009-7.
The purpose of this study was to examine the bonding effect of polyvalent alcohols as dentine primers without a methacrylate group, which may cause contact dermatitis.
The efficacy of polyvalent alcohols as dentine primers was estimated by measuring the wall-to-wall polymerization contraction gap width of a light-activated resin composite filled in a cylindrical dentine cavity in an extracted human tooth. A dentine cavity was cleaned with ethylenediaminetetraacetic acid (EDTA) and primed with an aqueous solution of either ethylene glycol, glycerol, erythritol, xylitol or sorbitol at concentrations of between 25 and 75 wt%. A light-cured resin composite was filled after the application of a commercial dual-cured bonding agent.
Contraction gap formation was completely prevented only in the group in which the dentine cavity had been primed with an aqueous solution of 62.5% wt% ethylene glycol. Furthermore, in the measurement of a tensile bond strength to a flat dentine surface, high tensile bond strength (17.5 +/- 4.4 MPa) was observed in the group that was primed with 62.5% ethylene glycol solution.
These results suggest that it is not necessary to dissolve methacrylates in a dentine primer when the primer is dried with a blast of compressed air before application of a polymerizable, suitable bonding agent. It is concluded that a dentine primer composed of polyvalent alcohol solutions without a methacrylate group which may cause contact dermatitis, is effective as a dentine primer, affects the dentine surface, and promotes the efficacy of the dentine bonding system.
本研究旨在考察不含甲基丙烯酸酯基团的多元醇作为牙本质底漆的粘结效果，甲基丙烯酸酯基团可能会引起接触性皮炎。
通过测量填充在拔除的人牙圆柱状牙本质窝洞中的光固化树脂复合材料的壁间聚合收缩间隙宽度，评估多元醇作为牙本质底漆的效果。用乙二胺四乙酸（EDTA）清洁牙本质窝洞，并用浓度为25%至75%重量比的乙二醇、甘油、赤藓糖醇、木糖醇或山梨醇水溶液进行底漆处理。在应用市售双固化粘结剂后填充光固化树脂复合材料。
仅在牙本质窝洞用62.5%重量比的乙二醇水溶液进行底漆处理的组中，完全防止了收缩间隙的形成。此外，在测量与平坦牙本质表面的拉伸粘结强度时，在用62.5%乙二醇溶液进行底漆处理的组中观察到高拉伸粘结强度（17.5±4.4MPa）。
这些结果表明，在应用可聚合的合适粘结剂之前，当用压缩空气吹干底漆时，无需在牙本质底漆中溶解甲基丙烯酸酯。得出结论，由不含可能引起接触性皮炎的甲基丙烯酸酯基团的多元醇溶液组成的牙本质底漆，作为牙本质底漆是有效的，会影响牙本质表面，并促进牙本质粘结系统的功效。
