The effect of immediate dentin sealing on the marginal adaptation and bond strengths of total-etch and self-etch adhesives
Autor: | José Roberto Cury Saad, Claudia Regina Buanain de Freitas, Avishai Sadan, Sillas Duarte |
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Rok vydání: | 2009 |
Předmět: |
Ceramics
Silver Staining Time Factors Materials science Surface Properties medicine.medical_treatment Dentistry Dental bonding Composite Resins Tooth Cervix Polyethylene Glycols Acid Etching Dental Polymethacrylic Acids stomatognathic system Tensile Strength Materials Testing Dentin medicine Humans Single bond Bisphenol A-Glycidyl Methacrylate Dental Restoration Permanent Cementation Dental Leakage Inlay Bond strength business.industry Dental Bonding Temperature Dental Marginal Adaptation Cementation (geology) Resin Cements medicine.anatomical_structure Glass Ionomer Cements Dentin-Bonding Agents Stress Mechanical Adhesive Oral Surgery Dental Cavity Preparation business Dental restoration Silicate Cement |
Zdroj: | The Journal of Prosthetic Dentistry. 102:1-9 |
ISSN: | 0022-3913 |
Popis: | Statement of problem Sealing ability and bond strengths of total-etch and self-etch dentin adhesives used for immediate dentin sealing have not been assessed and established. Purpose The purpose of this study was to determine the effectiveness of immediate dentin sealing (IDS) using total-etch or self-etch dentin adhesives on microleakage and microtensile bond strength. Material and methods Twenty recently extracted molars were selected, and standard MOD inlay preparations were made with the gingival margins located below the cemento-enamel junction. The teeth were assigned to 4 experimental groups (n=5) according to the indirect composite restoration cementation technique used: (1) immediate dentin sealing with Adper Single Bond (TEBI); (2) conventional adhesive cementation technique using Adper Single Bond (TEAI); (3) immediate dentin sealing using Adper Prompt L-Pop (SEBI); or (4) conventional adhesive cementation technique using Adper Prompt L-Pop (SEAI). The restored teeth were thermal cycled 1,000 times between 5° and 55°C and then immersed in 50% ammoniacal silver nitrate. Three specimens per restoration were evaluated for microleakage, according to predefined scores, and submitted to Friedman's test (α=.05). The specimens were then sectioned to obtain 0.8 ±0.2-mm-thick sticks (with n ranging from 32 to 57 specimens) and submitted to microtensile bond strength (μTBS) testing. The obtained data were submitted to 2-way ANOVA test (α=.05). Results None of the experimental groups demonstrated complete elimination of marginal microleakage. There were significant differences in microleakage of the tested adhesives (P>.001). IDS microleakage scores were similar to those obtained using the conventional cementation technique (CCT) for both adhesives. The highest mean bond strengths were obtained with TEBI (51.1 MPa), whereas SEAI showed the lowest mean bond strengths (1.7 MPa). IDS resulted in significantly higher bond strengths than CCT (P Conclusions Total-etch and self-etch adhesives have a significant effect on IDS. IDS resulted in high bond strengths for both adhesives; however, the microleakage was similar to that obtained with CCT. (J Prosthet Dent 2009;102:1-9) |
Databáze: | OpenAIRE |
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