Abstract
This study evaluated the influence of heat treatment (HT) of the silane on the microtensile bond strength of resin cement to a feldspathic ceramic. Ceramic (VITA VM7) and composite blocks (N=32) were divided into four groups (n=6 for bond test, n=2 for SEM) at random and subject to following sequence of conditioning: G1: HF 9.6%+Silane+Panavia F2.0, G2: HF 9.6%+Silane+HT+Panavia F2.0, G3: Silane+HT+Panavia F2.0, and G4: Silane+Panavia F2.0. HT was performed in an oven (100°C, 2 minutes). G1 (17.6±2.3 MPa) and G2 (19±3.2 MPa) showed significantly higher mean bond strength than those of G3 (9.1±2.8 MPa) and G4 (10.9±1.8 MPa). SEM analysis showed exclusively mixed failures. Silane HT did not increase the bond strength.
Publication types
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Comparative Study
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Randomized Controlled Trial
MeSH terms
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Acid Etching, Dental / methods
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Adhesiveness
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Aluminum Silicates / chemistry*
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Ceramics / chemistry
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Composite Resins / chemistry
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Dental Bonding / methods*
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Dental Materials / chemistry
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Dental Porcelain / chemistry*
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Dental Stress Analysis / instrumentation
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Hot Temperature
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Humans
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Hydrofluoric Acid / chemistry
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Materials Testing
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Microscopy, Electron, Scanning
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Potassium Compounds / chemistry*
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Resin Cements / chemistry*
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Silanes / chemistry*
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Spectrometry, X-Ray Emission
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Stress, Mechanical
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Surface Properties
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Tensile Strength
Substances
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Aluminum Silicates
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Composite Resins
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Dental Materials
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Panavia-Fluoro
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Potassium Compounds
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Resin Cements
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Silanes
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VITA VM7
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Dental Porcelain
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feldspar
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Hydrofluoric Acid