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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

November/December 2010
Volume 41 , Issue 10

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Short-Term In Situ/Ex Vivo Study Of The Anticariogenic Potential Of A Resin-Modified Glass-Ionomer Cement Associated With Adhesive Systems

Linda Wang, DDS, MS, PhD/Heitor Marques Honório, DDS, MS, PhD/Daniela Rios, DDS, MS, PhD/Alberto Carlos Botazzo Delbem, DDS, MS, PhD/Regina Guenka Palma-Dibb, DDS, MS, PhD/Marília Afonso Rabelo Buzalaf, DDS, MS, PhD/Maria Teresa Atta, DDS, MS, PhD/Livia Maria Andaló Tenuta, DDS, MS, PhD

PMID: 20927415

Objective: As resin-modified glass-ionomer cement (RMGIC) is an adhesive material, its association to dentin bonding agents (DBAs) was previously proposed. This study investigated the adjunctive behavior of an RMGIC with etch-and-rinse bonding systems under in situ/ex vivo cariogenic challenge. Method and Materials: Bovine enamel blocks (3 3 3 3 2 mm) were randomly assigned to group VP, Vitremer + its own primer (3M ESPE); group VSB, Vitremer + Single Bond (3M ESPE); and group VPB, Vitremer + Prime & Bond 2.1 (Dentsply). Two blocks of each group were randomly placed in an acrylic palatal appliance, so each appliance included six blocks. Volunteers (n = 10) wore these appliances according to given instructions to promote a sucrose challenge eight times/day for 15 days. After this period, the blocks were removed from the devices and cleaned, and demineralization was assessed through longitudinal microhardness analysis (Knoop indenter, 25 g/5 s). Data were submitted to three-way ANOVA and Tukey test (P < .05). Results: No treatment was able to completely avoid demineralization. All materials showed a statistically significant difference in mineral loss when the microhardness on the outer enamel was compared with deeper regions (P < .05). Conclusion: Association of the tested RMGICs with etch-and-rinse DBAs did not seem to be more beneficial against caries than the conventional treatment with RMGIC. (Quintessence Int 2010;41:e192–e199)

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