Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite.

Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. Research Abstract Details 

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Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. Abstract Text:

Federica Papacchini,Francesca Monticelli,Irida Hasa,Ivana Radovic,Andrea Fabianelli,Antonella Polimeni,Marco Ferrari,

PURPOSE: To evaluate the effect of different silane agents and air-drying temperatures on the repair strength of a microfilled hybrid composite. MATERIALS AND METHODS: Composite cylinders (8 x 4 mm) of Gradia Direct Anterior (GC, N=36), stored in a saline solution at 37 degrees C for 1 month, were sandblasted (50-microm aluminium oxide), cleaned (35% phosphoric acid) and randomly divided into six groups (n=6). Two prehydrolyzed silane primers (Monobond-S, Ivoclar-Vivadent, Porcelain Primer, Bisco), a non prehydrolyzed silane primer (Porcelain Liner M, Sun Medical) and three silane/adhesive coupling agents (Porcelain Bond Activator-PBA/Clearfil New Bond, PBA/Clearfil SE Bond, PBA/Clearfil Tri-S Bond, Kuraray) were investigated. Silane-coated surfaces were air dried at two different temperatures (23 degrees C and 38 degrees C) and repairs (8 x 8 mm) were fabricated (Gradia Direct Anterior). Unrepaired composite cylinders (8 x 8 mm, n=6) were used as control to evaluate the cohesive strength of the material. Microtensile bond strength measurements (microTBS) were performed. Results: The silane agent applied (p < 0.001), the airdrying temperature (p < 0.001) and their interaction (p < 0.001) were significant factors (two-way ANOVA, Tukey test; p < 0.05). Silane primers achieved inferior microTBS when air dried at 23 degrees C as compared to silane/adhesive blends. Warm air-drying was significantly beneficial to composite repairs mediated by silane primers. Comparable results were achieved by silane/adhesive couplings at 23 degrees C and 38 degrees C. At 38 degrees C all the intermediate agents resulted in repair microTBS that were comparable to the 24-h cohesive strength of the composite (one-way ANOVA, Dunnett t-tests; p < 0.05). CONCLUSION: The chemical interactions between silane primers and compozite substrate may be optimized through warm airdrying. Silane/adhesive couplings were not influenced by the air drying temperature.

Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. Publishing Authors By Initials

F Papacchini,F Monticelli,I Hasa,I Radovic,A Fabianelli,A Polimeni,M Ferrari,

For similar biomechanics: tensile strength research abstracts see: biomechanics: tensile strength research

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Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: The journal of adhesive dentistry

VOLUME: 9

Page Numbers: 391-7

Journal Abbreviation:

ISSN: 1461-5185

DAY: 21

MONTH: Aug

YEAR: 2007

Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 100888552

Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. Keywords Mesh Terms:

KEYWORDS: Tensile Strength

MESH TERMS: chemistry

Chemical & Substance for Abstract: Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite. Information

Substance Name: Silanes

Registry Number: 0

Grant and Affiliation Information for Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite.

AFFILIATION: Department of Dental Materials and Restorative Dentistry, University of Siena, Policlinico Le Scotte, Siena, Italy.

Country: England

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MEDLINETA: J Adhes Dent

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