title: Bonding effectiveness of composite-dentin interfaces after mechanical loading with a new device (Rub&Roll).
abstract: This study evaluated the effect of mechanical loading with a new device on the microtensile bond strength (µTBS) of adhesive systems to dentin. Forty molars were divided according to adhesive systems: self-etch (ClearfilTMSE Bond -CSE) and etch-and-rinse (Adper ScotchbondTM1XT -ASB); and to aging (n=5): control; MC1-250,000; MC2-500,000; and MC3-750,000 mechanical cycles. Microtensile bond strength was measured and fracture modes were analyzed. Data for µTBS were subjected to Kruskal-Wallis and post hoc tests (p<0.05). Mechanical loading (p<0.001) and adhesive systems (p=0.024) affected µTBS values. The adhesive systems showed a similar behavior, except in the MC3 group, which the self-etch CSE showed the highest µTBS. The new device promotes a decreasing of µTBS as the number of cycles increased. Difference between materials was observed only after 750,000 mechanical cycles.
authors.affiliation: Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas.
authors.forename: Anelise Fernandes
authors.initials: AF
authors.lastname: Montagner
authors.forename: Niek J
authors.initials: NJ
authors.lastname: Opdam
authors.forename: Jan L
authors.initials: JL
authors.lastname: Ruben
authors.forename: Maximiliano Sérgio
authors.initials: MS
authors.lastname: Cenci
authors.forename: Marie-Charlotte
authors.initials: MC
authors.lastname: Huysmans
mesh_terms: D003188:Composite Resins; D001840:Dental Bonding; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D008963:Molar; D019279:Resin Cements; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements