title: Effect of a functional monomer (MDP) on the enamel bond durability of single-step self-etch adhesives.
abstract: The present study aimed to determine the effect of the functional monomer, 10-methacryloxydecyl dihydrogen phosphate (MDP), on the enamel bond durability of single-step self-etch adhesives through integrating fatigue testing and long-term water storage. An MDP-containing self-etch adhesive, Clearfil Bond SE ONE (SE), and an experimental adhesive, MDP-free (MF), which comprised the same ingredients as SE apart from MDP, were used. Shear bond strength (SBS) and shear fatigue strength (SFS) were measured with or without phosphoric acid pre-etching. The specimens were stored in distilled water for 24 h, 6 months, or 1 yr. Although similar SBS and SFS values were obtained for SE with pre-etching and for MF after 24 h of storage in distilled water, SE with pre-etching showed higher SBS and SFS values than MF after storage in water for 6 months or 1 yr. Regardless of the pre-etching procedure, SE showed higher SBS and SFS values after 6 months of storage in distilled water than after 24 h or 1 yr. To conclude, MDP might play an important role in enhancing not only bond strength but also bond durability with respect to repeated subcritical loading after long-term water storage.
authors.affiliation: Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Tsuchiya
authors.affiliation: Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
authors.forename: Toshiki
authors.initials: T
authors.lastname: Takamizawa
authors.affiliation: Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA.
authors.forename: Wayne W
authors.initials: WW
authors.lastname: Barkmeier
authors.affiliation: Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
authors.forename: Keishi
authors.initials: K
authors.lastname: Tsubota
authors.affiliation: Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
authors.forename: Akimasa
authors.initials: A
authors.lastname: Tsujimoto
authors.affiliation: Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA.
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Berry
authors.affiliation: Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA.
authors.forename: Robert L
authors.initials: RL
authors.lastname: Erickson
authors.affiliation: Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA.
authors.forename: Mark A
authors.initials: MA
authors.lastname: Latta
authors.affiliation: Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Miyazaki
mesh_terms: D000134:Acid Etching, Dental; D000269:Adhesives; D003188:Composite Resins; D001840:Dental Bonding; D003743:Dental Enamel; D017220:Dentin-Bonding Agents; D008422:Materials Testing; D019279:Resin Cements; D033081:Shear Strength
chemical_list: D000269:Adhesives; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements
keywords: 10-methacryloxydecyl dihydrogen phosphate (MDP); bond durability; shear bond strength; shear fatigue strength; single-step self-etch adhesives