title: Influence of addition of 2-[3-(2H-benzotriazol-2-YL)- 4-hydroxyphenyl] ethyl methacrylate to an experimental adhesive system.
abstract: The aim of this study was to evaluate the addition of 2-[3-(2HBenzotriazol- 2-yl)-4-hydroxyphenyl]ethyl methacrylate (BTAM) to an experimental adhesive resin. An experimental base adhesive resin was formulated with BisGMA, TEGDMA and HEMA, to which BTAM was added at 1, 2.5 and 5%, in weight. One group with no addition was used as control. The experimental adhesives were evaluated for antibacterial potential (against Streptococcus mutans), degree of conversion with FTIR, softening in solvent and microRaman interface analyses. Data were analyzed by Kruskal-Wallis, paired t test and ANOVA and Tukey, considering a 5% level of significance. The results showed antibacterial activity of 5% BTAM against S. mutans (p<0.05), however, no difference was found among BTAM groups (p> 0.05). The results of degree of conversion and softening of solvent showed no statistical difference between BTAM and control groups (p>0.05). The addition of 5% BTAM showed higher antibacterial activity than the negative control, and copolymerization with comonomer blend of adhesive resin and BTAM was detected at the dentin/ adhesive interface.
authors.affiliation: Dental Materials Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Carolina C
authors.initials: CC
authors.lastname: Centenaro
authors.affiliation: Dental Materials Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Flávia V
authors.initials: FV
authors.lastname: Rostirolla
authors.affiliation: Dental Materials Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Vicente C B
authors.initials: VC
authors.lastname: Leitune
authors.affiliation: Department of Preventive and Social Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Clarissa F
authors.initials: CF
authors.lastname: Parolo
authors.affiliation: Materials Engineering School, Federal University of Pelotas, Pelotas, RS, Brazil.
authors.forename: Fabrício A
authors.initials: FA
authors.lastname: Ogliari
authors.affiliation: Dental Materials Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Susana M W
authors.initials: SM
authors.lastname: Samuel
authors.affiliation: Dental Materials Laboratory, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Fabrício M
authors.initials: FM
authors.lastname: Collares
mesh_terms: D000269:Adhesives; D001840:Dental Bonding; D017220:Dentin-Bonding Agents; D006801:Humans; D008689:Methacrylates / Q000737:chemistry*; D019279:Resin Cements
chemical_list: D000269:Adhesives; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements