M M Scherer1, N F Lunkes2, I P M Soares3, C A de Oliveira3, J C P Imparato4, J Hebling3, T L Lenzi5. 1. School of Dentistry, Post-Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. 2. School of Dentistry, Department of Surgery and Orthopedics, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. 3. Post-Graduate Program in Oral Rehabilitation, Department of Dental Materials and Prosthodontics, Araraquara School of Dentistry, Univ. Estadual Paulista - UNESP, Araraquara, Brazil. 4. School of Dentistry, Department of Pediatric Dentistry and Orthodontics, University of São Paulo, São Paulo, Brazil. 5. School of Dentistry, Post-Graduate Program in Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. tathilenzi@hotmail.com.
Abstract
PURPOSE: This in vitro study evaluated the microshear bond strength (μSBS) of a universal adhesive after silver diammine fluoride (SDF) application at different concentrations on carious dentinal lesions in primary teeth. METHODS: Flat dentin carious-induced surfaces from 40 primary molars were randomly assigned to four experimental groups: without SDF treatment (control), 12% SDF, 30% SDF, or 38% SDF application. After 14 days of storage in artificial saliva at 37 °C, a universal adhesive system (Scotchbond Universal, 3 M ESPE) was applied in the etch-and-rinse mode and resin composite cylinders were built (0.72 mm2). After 24 h of water storage, the μSBS test was performed and the failure mode was determined. Data were analysed using one-way ANOVA and Tukey's post hoc tests (α = 0.05). RESULTS: The application of 38% SDF resulted in higher μSBS mean than control and use of 12% SDF (p = 0.006). No significant differences were observed among control, 12% SDF, and 30% SDF. All specimens tested showed adhesive/mixed failure. CONCLUSION: The use of SDF does not jeopardise the bonding of a universal adhesive applied in the etch-and-rinse mode to carious dentinal lesions in primary teeth, irrespective of the product concentration.
PURPOSE: This in vitro study evaluated the microshear bond strength (μSBS) of a universal adhesive after silver diammine fluoride (SDF) application at different concentrations on carious dentinal lesions in primary teeth. METHODS: Flat dentin carious-induced surfaces from 40 primary molars were randomly assigned to four experimental groups: without SDF treatment (control), 12% SDF, 30% SDF, or 38% SDF application. After 14 days of storage in artificial saliva at 37 °C, a universal adhesive system (Scotchbond Universal, 3 M ESPE) was applied in the etch-and-rinse mode and resin composite cylinders were built (0.72 mm2). After 24 h of water storage, the μSBS test was performed and the failure mode was determined. Data were analysed using one-way ANOVA and Tukey's post hoc tests (α = 0.05). RESULTS: The application of 38% SDF resulted in higher μSBS mean than control and use of 12% SDF (p = 0.006). No significant differences were observed among control, 12% SDF, and 30% SDF. All specimens tested showed adhesive/mixed failure. CONCLUSION: The use of SDF does not jeopardise the bonding of a universal adhesive applied in the etch-and-rinse mode to carious dentinal lesions in primary teeth, irrespective of the product concentration.
Authors: Steve Armstrong; Lorenzo Breschi; Mutlu Özcan; Frank Pfefferkorn; Marco Ferrari; Bart Van Meerbeek Journal: Dent Mater Date: 2016-12-20 Impact factor: 5.304
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