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用树脂材料充填深达牙本质的窝洞时常因聚合性收缩造成不良的边缘性泄漏,使微生物和色素得以进入,增加了牙髓炎症、边缘变色和继发龋的机会,故在树脂和牙本质之间应用粘结材料,以达到两者的结合是十分必要的。本文作者用选择性地与牙本质中胶原或其他蛋白质结合的粘结剂进行了多次试验。本实验是用一种β-羟乙基甲基丙烯酸酯(β-hydroxyethylmethacrylate,以下简称HEMA)和戊二醛的混合液作为牙本质粘结剂,其目的是要测试用该混合液在牙本质和树脂之间所产生的结合强度。材料与方法1。牙体制备。将拔出的人牙刮洗干净,环氧树脂包埋,然后制备牙本质平面,最后一步用1000号金刚砂纸湿磨。2.牙本质面处理。用0.5M EDTA(乙二胺四
Filling cavities deep with dentin with a resin material often results in poor edge leakage due to polymeric shrinkage, allowing entry of microorganisms and pigments, increasing the chances of pulp inflammation, edge discoloration and secondary caries, so in resins and teeth It is necessary to use the bonding material between the two to achieve the combination of the two. The authors conducted multiple tests with a binder that selectively binds collagen in dentin or other proteins. In this experiment, a mixed solution of β-hydroxyethylmethacrylate (β-hydroxyethyl methacrylate) and glutaraldehyde was used as the dentin binder. The purpose of this experiment was to test the effect of the mixed solution on dentin And resin produced between the bonding strength. Materials and methods 1. Tooth preparation. The extracted human tooth scraped clean, embedded in epoxy resin, and then prepare the dentin plane, the last step wet grinding with emery paper No. 1000. 2. Dentin surface treatment. With 0.5M EDTA (ethylene diamine four