Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja, University of Granada, 18071 Granada, Spain.
Microsc Microanal. 2012 Jun;18(3):497-508. doi: 10.1017/S1431927612000074.
The objective of this article was to investigate the effect of carbide and polymer burs caries removal methods on the bond strength of different adhesives to dentin. Resin restorations were performed in sound and caries-affected dentin, after using polymer or carbide burs and bonding with four different adhesive (Single bond, SB; Clearfil SE bond, SEB; FL-Bond II, FLB; and Fuji II-LC, FUJI). Microtensile bond strength (MTBS) was measured. Data were analyzed with ANOVA and Student-Newman-Keuls tests. Debonded surfaces were observed by scanning electron microscopy. Bonded interfaces were examined using light microscopy (Masson's trichrome staining). In sound dentin, MTBS was similar for SEB and SB, and higher than that of FLB and FUJI. Bond strength to carbide bur prepared dentin was similar for SB, SEB, and FLB; FUJI presented the lowest. SB applied on polymer bur excavated dentin presented similar values to those of the carbide bur group; MTBS attained by SEB, FLB, and FUJI decreased when bonding to dentin treated with polymer burs; FUJI yielded pretesting failures in all specimens. Polymer burs created a thick smear layer that was not infiltrated by tested self-etching agents. The bonding effectiveness of self-etching and glass-ionomer-like adhesives to dentin decreased when polymer burs were used.
本文旨在研究不同车针（碳化钨车针和聚合物车针）去龋方法对牙本质粘结强度的影响。在使用聚合物车针或碳化钨车针并采用四种不同粘结剂（Single bond、SB；Clearfil SE bond、SEB；FL-Bond II、FLB；和 Fuji II-LC、FUJI）粘结后，对正常牙本质和龋损牙本质进行树脂修复。采用微拉伸粘结强度（MTBS）进行测量。采用方差分析和 Student-Newman-Keuls 检验对数据进行分析。使用扫描电子显微镜观察离解表面。用光镜（Masson 三色染色）检查粘结界面。在正常牙本质中，SEB 和 SB 的 MTBS 相似，高于 FLB 和 FUJI。SB、SEB 和 FLB 对碳化钨车针制备牙本质的粘结强度相似；FUJI 最低。在聚合物车针制备牙本质上应用 SB 与碳化钨车针组具有相似的粘结强度值；当粘结处理过的聚合物车针牙本质时，SEB、FLB 和 FUJI 的粘结强度降低；FUJI 在所有标本中均出现预测试失败。聚合物车针产生的厚玷污层不能被测试的自酸蚀剂渗透。当使用聚合物车针时，自酸蚀和玻璃离子体样粘结剂对牙本质的粘结效果降低。
