Taira Y, Matsumura H, Atsuta M
Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, Sakamoto, Japan.
Eur J Oral Sci. 1998 Aug;106(4):887-91. doi: 10.1046/j.0909-8836.1998.eos106408.x.
The present study investigated the effect of 2-isocyanatoethyl methacrylate (IEM) and iron (II) perchlorate on dentin adhesion. Four primers were evaluated, consisting of aqueous 2-hydroxyethyl methacrylate (HEMA) solutions containing 5, 10, 20 or 50 micromol/g iron (II) perchlorate. Five luting agents were prepared with methyl methacrylate (MMA), poly(methyl methacrylate) (PMMA), tri-n-butylborane (TBB) initiator and IEM. The concentrations of IEM in the luting agents were 0.2, 0.4, 0.8, 2.0 and 4.0 wt%. Extracted bovine teeth were ground to expose the dentin, etched with an aqueous solution of 10 wt% phosphoric acid, primed, and then bonded with stainless-steel rods; tensile bond strengths were determined after 1 d immersion in water. The highest bond strength (20.7 MPa) was recorded for the group using 10 micromol/g iron (II) perchlorate and 2.0 wt% IEM. The use of IEM was effective in decreasing the optimal concentration of iron (II) perchlorate, and this may contribute to the color stability of iron-containing pretreatment agents.
本研究调查了甲基丙烯酸 2-异氰酸乙酯（IEM）和高氯酸铁（II）对牙本质黏附的影响。评估了四种引发剂，它们是含有 5、10、20 或 50 μmol/g 高氯酸铁（II）的甲基丙烯酸 2-羟乙酯（HEMA）水溶液。用甲基丙烯酸甲酯（MMA）、聚甲基丙烯酸甲酯（PMMA）、三正丁基硼烷（TBB）引发剂和 IEM 制备了五种黏固剂。黏固剂中 IEM 的浓度分别为 0.2、0.4、0.8、2.0 和 4.0 wt%。将拔除的牛牙磨平以暴露牙本质，用 10 wt%的磷酸水溶液蚀刻，进行预处理，然后用不锈钢棒粘结；在水中浸泡 1 天后测定拉伸粘结强度。使用 10 μmol/g 高氯酸铁（II）和 2.0 wt% IEM 的组记录到最高粘结强度（20.7 MPa）。IEM 的使用有效地降低了高氯酸铁（II）的最佳浓度，这可能有助于含铁血预处理剂的颜色稳定性。
