Nogawa Hiroshi, Koizumi Hiroyasu, Saiki Osamu, Hiraba Haruto, Nakamura Mitsuo, Matsumura Hideo
Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry.
Dent Mater J. 2015;34(2):219-26. doi: 10.4012/dmj.2014-227. Epub 2015 Feb 24.
The purpose of this study was to evaluate the shear bond strength and durability of 4-META/MMA-TBB resin to human enamel. A self-etching primer that contained 4-META (Teeth Primer, TP) and 35-45% or 60-65% concentrations of phosphoric acid (K-Etchant Gel, KE, and Super Bond C&B Red Activator, RA) were used as the surface treatment agents. A methyl methacrylate (MMA)-based self-polymerizing resin (Super-Bond C&B) was used as a luting agent. The shear bond strength was determined both pre and post thermocycling. The results were statistically analyzed with a non-parametric procedure. The post-thermocycling shear bond strength of the TP group was significantly higher than that of other groups, and that of the KE group was significantly higher compared with the RA group. These results demonstrated that 4-META was effective. Furthermore, when the degree of tooth demineralization was compared, surface treatment with less demineralization using TP was the most effective treatment.
本研究的目的是评估4-META/MMA-TBB树脂与人类牙釉质的剪切粘结强度和耐久性。一种含有4-META的自酸蚀底漆（牙齿底漆，TP）以及浓度为35-45%或60-65%的磷酸（K-蚀刻凝胶，KE，和超级粘结C&B红色活化剂，RA）被用作表面处理剂。一种基于甲基丙烯酸甲酯（MMA）的自聚合树脂（超级粘结C&B）被用作粘结剂。在热循环前后均测定了剪切粘结强度。结果采用非参数方法进行统计分析。TP组热循环后的剪切粘结强度显著高于其他组，KE组的剪切粘结强度显著高于RA组。这些结果表明4-META是有效的。此外，当比较牙齿脱矿程度时，使用TP进行脱矿较少的表面处理是最有效的治疗方法。
