title: Evaluation of microtensile bond strength of self-etching adhesives on normal and caries-affected dentin.
abstract: The purpose of this study was to evaluate the µTBS (microtensile bond strength) of currently available self-etching adhesives with an experimental self-etch adhesive in normal and caries-affected dentin, using a portable hardness measuring device, in order to standardize dentin Knoop hardness. Normal (ND) and caries-affected dentin (CAD) were obtained from twenty human molars with class II natural caries. The following adhesive systems were tested: Mega Bond (MB), a 2-step self-etching adhesive; MTB-200 (MTB), an experimental 1-step self-etching adhesive (1-SEA), and two commercially available one-step self-etching systems, G-Bond Plus (GB) and Adper Easy Bond (EB). MB-ND achieved the highest µTBS (p<0.05). The mean µTBS was statistically lower in CAD than in ND for all adhesives tested (p<0.05), and the 2-step self-etch adhesive achieved better overall performance than the 1-step self-etch adhesives.
authors.affiliation: Department of Dental Sciences, Division of Operative Dentistry, Centre of Heath Sciences, Federal University of Santa Catarina - UFSC.
authors.forename: Shizuma
authors.initials: S
authors.lastname: Shibata
authors.forename: Luiz Clovis Cardoso
authors.initials: LC
authors.lastname: Vieira
authors.forename: Luiz Narciso
authors.initials: LN
authors.lastname: Baratieri
authors.forename: Jiale
authors.initials: J
authors.lastname: Fu
authors.forename: Shuhei
authors.initials: S
authors.lastname: Hoshika
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Matsuda
authors.forename: Hidehiko
authors.initials: H
authors.lastname: Sano
mesh_terms: D000134:Acid Etching, Dental; D001840:Dental Bonding; D003738:Dental Cements; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D019279:Resin Cements; D013718:Tensile Strength
chemical_list: D003738:Dental Cements; D017220:Dentin-Bonding Agents; D019279:Resin Cements