title: Influence of conditioning time on bond strength: evaluation of self-etching adhesive systems.
abstract: The aim of this study was to evaluate the tensile bond strength of self-etching adhesive systems with different dentin conditioning times. Sixty caries-free, extracted third molars were selected, with the occlusal surface removed by a diamond saw disc. The specimens were embedded in epoxy resin and divided randomly into six groups (n = 10), according to the conditioning time and adhesive system used. After restoration, the specimens were stored in distilled water at room temperature for 24 hours; they then were submitted to the tensile bond strength test. The results were measured in MPa, then submitted to ANOVA and Tukey's test (P = 0.05). The adhesive system used and the length of dentin conditioning time were statistically significant (P < 0.05). The application time of the conditioner before photocuring did not have a significant effect on tensile bond strength. These results indicate that the resting time of adhesive above the dentin does not directly affect the bond strength of the adhesive system.
authors: Federal University of Santa Maria, Santa Maria, RS, Brazil.
authors: Marciano de Freitas
authors: Mde F
authors: Borges
authors: Jovito Adiel
authors: JA
authors: Skupien
authors: Anelise Fernandes
authors: AF
authors: Montagner
authors: Jeferson da Costa
authors: Jda C
authors: Marchiori
authors: Tissiana
authors: T
authors: Bortolotto
authors: Ivo
authors: I
authors: Krejci
authors: Alexandre Henrique
authors: AH
authors: Susin
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D000293:Adolescent; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D013314:Stress, Mechanical; D013718:Tensile Strength; D013997:Time Factors; D055815:Young Adult
chemical_list: C438313:Clearfil SE Bond; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C446260:One-Up-Bond F; C408584:Prompt L-Pop; D019279:Resin Cements; C533204:filtek Z350