title: Effects of silane coupling agents and solutions of different polarity on PMMA bonding to alumina.
abstract: The objective of this study was to clarify the effects of silane coupling agents and solutions of different polarity on polymethyl methacrylate (PMMA) bonding to alumina. Three silane coupling agents (3-methacryloxypropyltrimethoxysilane (MPS),3-aminopropyltriethoxysilane (APS) and N-2 (aminoethyl) 3-aminopropyltriethoxysilane) and 3 different polar solutions, 70% ethanol, isopropanol and toluene, were selected for silanization. Shear bond strengths were statistically compared with Tukey HSD(α=0.05). The alumina surfaces after silanization and shear bond test were examined with an energy dispersive spectrometer (EDS).The bond strengths of PMMA on the alumina with MPS (15.0 MPa), APS (13.8 MPa) in ethanol were greater than the others in nonthermocyclings. The bond strength decreased after thermocyclings. The ethanol groups were greater than the others. EDS revealed Si remaining on the alumina surface after the shear bond test. The results indicated that the silanization using MPS and APS with ethanol solution was effective.
authors.affiliation: Oral Biology, Faculty of Dentistry, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand.
authors.forename: Pisaisit
authors.initials: P
authors.lastname: Chaijareenont
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Norihiro
authors.initials: N
authors.lastname: Nishiyama
authors.forename: Mansuang
authors.initials: M
authors.lastname: Arksornnukit
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D000704:Analysis of Variance; D001840:Dental Bonding; D003799:Dental Stress Analysis; D004560:Electricity; D006358:Hot Temperature; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D033081:Shear Strength; D012821:Silanes / Q000737:chemistry*; D012995:Solubility; D012996:Solutions; D012997:Solvents / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D013499:Surface Properties
chemical_list: D012821:Silanes; D012996:Solutions; D012997:Solvents; D019904:Polymethyl Methacrylate; D000537:Aluminum Oxide