title: Effect of air-drying dentin surfaces on dentin bond strength of a solvent-free one-step adhesive.
abstract: The purpose was to evaluate the effect of air-drying dentin surfaces on the microtensile bond strength (μTBS) of a solvent-free onestep adhesive (Bond 1 SF). Twelve human molars were ground with 600-grit SiC paper. Before applying bonding agent, the dentin surface was rinsed with distilled water and blot-dried with tissue paper, followed by air-drying for 0, 3, 30, and 60 s using with a dental air syringe. After applying and curing Bond 1 SF, resin composite was incrementally built up. Specimens were then stored in distilled water for 24 h and then μTBSs were measured at a cross-head speed of 1 mm/min. Higher μTBS were observed when the dentin surface was air-dried for 3 s (33.2±6.8MPa)>0 s (26.7±4.5MPa)>30 s (22.6±5.5MPa)=60 s (20.4±5.0MPa). The results suggested that prolonged air-drying of the dentin surface removed water and decreased the bond strengths of Bond 1 SF.
authors.affiliation: Cariology and Operative Dentistry, Oral Restitution Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Takai
authors.forename: Keiichi
authors.initials: K
authors.lastname: Hosaka
authors.forename: Keisuke
authors.initials: K
authors.lastname: Kambara
authors.forename: Suppason
authors.initials: S
authors.lastname: Thitthaweerat
authors.forename: Naoko
authors.initials: N
authors.lastname: Matsui
authors.forename: Masahiro
authors.initials: M
authors.lastname: Takahashi
authors.forename: Ryuzo
authors.initials: R
authors.lastname: Kishikawa
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Nakajima
authors.forename: Masayuki
authors.initials: M
authors.lastname: Otsuki
authors.forename: Richard M
authors.initials: RM
authors.lastname: Foxton
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D000388:Air; D000704:Analysis of Variance; D001840:Dental Bonding; D045662:Dental Etching; D003799:Dental Stress Analysis; D003804:Dentin; D017220:Dentin-Bonding Agents / Q000737:chemistry; D003890:Desiccation / Q000379:methods*; D006801:Humans; D008689:Methacrylates / Q000737:chemistry; D008963:Molar; D019279:Resin Cements / Q000737:chemistry; D013499:Surface Properties; D013718:Tensile Strength
chemical_list: C115611:BOND-1 adhesive; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements