title: Surface treatment of dentin with GLUMA and iron compounds for bonding indirect restorations.
abstract: The purpose of this study was to evaluate five dentin bonding systems simulating indirect restorations. The surface of bovine and human dentin was primed with a glutaraldehyde agent (GLUMA) and placed in a humidor at 37 degrees C for 168 h. In an experimental bonding system (GLUMA/CY/SB), the surfaces were etched with phosphoric acid, primed with cytochrome c, and then bonded to an acrylic rod with a self-curing resin (4-META/MMA-TBB). Specimens using two commercially available bonding systems [All-Bond 2 (AB2) and Super-Bond C & B (10-3/SB)] and two controls with and without GLUMA (GLUMA/10-3/SB and CY/SB) were also prepared. Tensile testing revealed that the bond strengths were influenced by the bonding system, 168 h dentin exposure and their interaction, but not by the tooth origin. AB2 showed the lowest bond strength. With the 10-3/SB system, exposing the dentin to humidity resulted in a decrease in bond strength. After 168 h of exposure, no significant differences were observed between 10-3/SB and CY/SB. The most effective bonding was obtained with the bonding systems of GLUMA/10-3/SB and GLUMA/CY/SB. Improved outcome is expected with these bonding systems when building up abutment teeth with indirect restorations.
authors.affiliation: Nagasaki University, Graduate School of Biomedical Science, Nagasaki, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Baba
authors.forename: Y
authors.initials: Y
authors.lastname: Taira
authors.forename: H
authors.initials: H
authors.lastname: Matsumura
authors.forename: M
authors.initials: M
authors.lastname: Atsuta
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002417:Cattle; D001840:Dental Bonding / Q000379:methods*; D019232:Dental Restoration Failure; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents; D005976:Glutaral; D006801:Humans; D066298:In Vitro Techniques; D058085:Iron Compounds; D008689:Methacrylates; D020366:Methylmethacrylate; D008855:Microscopy, Electron, Scanning; D008963:Molar; D011109:Polymethacrylic Acids; D019904:Polymethyl Methacrylate; D013718:Tensile Strength
chemical_list: D017220:Dentin-Bonding Agents; D058085:Iron Compounds; D008689:Methacrylates; D011109:Polymethacrylic Acids; D020366:Methylmethacrylate; C005044:hydroxyethyl methacrylate; C034139:4-methacryloxyethyltrimellitic acid anhydride; D019904:Polymethyl Methacrylate; C044372:Gluma; D005976:Glutaral