The effect of a 3-methacryloxypropyltrimethoxysilane and vinyltriisopropoxysilane blend and tris(3-trimethoxysilylpropyl)isocyanurate on the shear bond strength of composite resin to titanium metal

Abstract

The effect of a 3-methacryloxypropyltrimethoxysilane and vinyltriisopropoxysilane blend and tris(3-trimethoxysilylpropyl)isocyanurate on the shear bond strength of composite resin to titanium metal Jukka P. Matinlinnaa, Jukka P.; Özcan, Mutlu; Lassilaa, Lippo V.J.; Vallittua, Pekka K. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. Download date: 21-04-2019The effect of a 3-methacryloxypropyltrimethoxysilane and vinyltriisopropoxysilane blend and tris(3-trimethoxysilylpropyl)isocyanurate on the shear bond strength of composite resin to titanium metal Summary Objectives. The aim of this study was to evaluate the reactions of silanes prior to attaching the composite to titanium and evaluate these silanes as coupling agents. Veneered titanium may be used as a prosthetic material.Methods. Two silane solutions, a mixture of both g-methacryloxypropyltrimethoxysilane and vinyltriisopropoxysilane, and tris(3-trimethoxysilylpropyl)isocyanurate were prepared as 2 wt% in two different (95% 2-propanol and 90% acetone) solutions. A control, 2 wt% g-methacryloxypropyltrimethoxysilane was prepared in both solutions. These six silane solutions were applied onto flat titanium surfaces. The samples ðN ¼ 250Þ were divided into two main groups: air-dried (room temperature) and heat cured for 1 h at 110 8C. Sinfony w veneering composite was applied and light-cured on the titanium. The control group was non-silanized. The specimens were assigned to two subgroups: not thermocycled, and thermocycled (5000 cycles, 5-55 8C). Shear bond strength of the composite was tested at a crosshead speed of 1.0 mm min 21 . Fresh silane solution hydrolysis, and condensation reaction on titanium surface were monitored by FTIR spectrometry.Results. Dry samples could be successfully tested, while thermocycling after 3700 cycles had gradually de-bonded the composite from the silanized titanium substrate. For dry samples, statistical analysis (ANOVA) showed that solvent and silane significantly affected the shear bond strength. The silane mixture in 2-propanol reacted at room temperature yielded 11.3 MPa (Standard deviation, SD, 3.6 MPa) and on the other hand, tris(3-trimethoxysilylpropyl)isocyanurate in 2-propanol yielded 10.7 MPa (SD 8.0 MPa) and g-methacryloxypropyltrimethoxysilane 20.4 MPa (SD 12.2 MPa). Non-silanized samples yielded 4.8 MPa (SD 2.1 MPa).Significance. In all solvents used, silanes reacted chemically with the titanium surface and covalent Si-O -Ti -and -Si-O -Si-bonds were evident.

Promotion of Adhesion Between Resin and Silica-coated Titanium by Silane Monomers and Formic Acid Catalyst

“…The substantial reduction in bond strength values due to thermo-cycling for all specimen groups can be partially explained by the more than 6-fold difference between thermal expansion coefficients of the experimental methacrylate resin (approximately the value for acrylic denture resin, about 76/°C×10 6 ) and Ti, (about 12/°C ×10 6 ) [25]. The shear bond strength results obtained in this study are lower than those reported in our previous studies of resin bonding to silica-coated Ti [14][15][16]18], as well as those in studies in which a silane blend produced significantly stronger bonding that functional silanes alone [18,20,21]. The three bifunctional silanes in this study were used without further purification by re-distillation, which may have contributed to reduced performance.…”

“…A hydrolysis time of 23 h was selected for the crosslinking silane and 1 h was selected for functional silanes because functional trialkoxy silanes hydrolyze sufficiently within 1 h [16][17][18][19][20][21]. Formic acid was used as the catalyst, and it has some similarities with acetic acid, which has been used in past studies.…”

“…2 Silane-aided bonding and the supposed siloxane layers on silica-coated Ti substrate when an organofunctional silane is blended with a cross-linking silane This in vitro study continues our investigations on silane monomer systems and the use of a non-filled experimental resin for dental purposes [14,15]. The medium for all experimental primers was again the optimized 95:5 ratio of ethanol in deionized water [16,17], but now acidified with formic acid, HCOOH. As a cross-linking silane, bis-1,2-(triethoxysilyl)ethane was selected on the basis of previous results [18][19][20][21].…”

“…One half of the prepared Ti coupons were kept in a desiccator for 24 h. The other half were subjected to wet thermo-cycling for 6,000 cycles between 5.0°C (±0.5°C) and 55.0°C (±0.5°C), with a standard dwelling time of 30 s and a transfer time of 2 s, in a custom-made system (modified Heto CBN 18-30 water baths; Allerø, Denmark). Immediately before testing, all specimens were immersed in a water bath at 37°C to prevent drying [14][15][16][17][18][19][20][21][22].…”

“…The spatial match of the silane molecule can also vary. In addition, the authors have investigated experimental silane primers as adhesion promoters for polished Ti [16] and silica-coated Ti [17]. In vitro studies of novel silane systems have suggested that their significantly enhanced adhesion could be useful in dental materials applications.…”