title: Quantitative evaluation of microleakage in Class V cavities using one-bottle and self-etching adhesive systems.
abstract: The aim of this in vitro study was to evaluate quantitatively the microleakage in Class V cavities restored with one-bottle and self-etching adhesive systems with and without previous acid etching. Two one-bottle adhesive systems (Single Bond and Prime & Bond 2.1) and one self-etching adhesive system (Clearfil Mega Bond) were used in this study. One hundred and twenty sound human premolar teeth were randomly divided into 6 groups, and 20 Class V restorations were prepared in the root dentin to test each bonding system. Each bonding system was used with and without acid etching. Specimens were prepared, dyed with 2% methylene blue, sectioned, triturated, and evaluated with an absorbance spectrophotometer test in order to quantify the infiltrated dye. Results were statistically evaluated by ANOVA and Tukey-Kramer test. No statistically significant differences were found among the adhesive systems when no etching agent was used. However, the Single Bond adhesive system showed statistically significant lower microleakage means than Clearfil Mega Bond and Prime & Bond 2.1 when 37% phosphoric acid was used. Single Bond and Clearfil Mega Bond adhesive systems presented similar behavior when the manufacturers' instructions were followed.
authors.affiliation: Department of Restorative Dentistry, School of Dentistry of Piracicaba, State University of Campinas.
authors.forename: Fabiana Mantovani Gomes
authors.initials: FM
authors.lastname: França
authors.forename: Flávio Henrique Baggio
authors.initials: FH
authors.lastname: Aguiar
authors.forename: Alex José Souza
authors.initials: AJ
authors.lastname: dos Santos
authors.forename: José Roberto
authors.initials: JR
authors.lastname: Lovadino
mesh_terms: D000704:Analysis of Variance; D001840:Dental Bonding / Q000295:instrumentation / Q000379:methods*; D003737:Dental Cavity Preparation / Q000295:instrumentation / Q000379:methods*; D003763:Dental Leakage; D006801:Humans; D008422:Materials Testing; D019279:Resin Cements; D013053:Spectrophotometry
chemical_list: D019279:Resin Cements