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Type: Artigo de periódico
Title: Sealing ability, water sorption, solubility and toothbrushing abrasion resistance of temporary filling materials
Author: Pieper, CM
Zanchi, CH
Rodrigues, SA
Moraes, RR
Pontes, LS
Bueno, M
Abstract: P>Aim To evaluate marginal seal, water sorption, solubility and loss of mass after brushing of several temporary filling materials. Methodology For marginal seal, Class I cavities, including endodontic access preparations, were made in human molar teeth and restored using one or other of several temporary filling materials (n = 10): zinc oxide/calcium sulphate-based cement (Cavit, 3M,ESPE, St. Paul, MN, USA), zinc oxide/eugenol cement (IRM, Dentsply Caulk, Milford, DE, USA), glass ionomer cement (Vidrion R, SSWhite, Rio de Janeiro, RJ, Brazil) or a dimethacrylate-based filling (Bioplic, Biodinmica, Londrina, PR, Brazil). Dye penetration was assessed after thermocycling and immersion in 0.5% basic fuchsine solution. For water sorption, solubility and loss of mass analyses, disc-shaped specimens were made. Water sorption and solubility were evaluated by mass alteration after storage in distilled water for 7 days (n = 7). Loss of mass was calculated based on the difference of mass after abrasion with a toothbrush (n = 5), and surfaces were analysed by SEM. Data of water sorption, solubility and loss of mass were submitted to anova and Tukey's test, and marginal sealing data to Kruskal-Wallis test (P < 0.05). Results Statistically significant differences were observed for marginal sealing (P < 0.0001), water sorption (P < 0.01), solubility (P < 0.01) and loss of mass (P < 0.05). Bioplic had the best marginal seal. Cavit had the greatest water sorption and solubility. Vidrion R and Bioplic had the lowest solubility. Loss of mass after brushing was higher for Cavit, followed by Bioplic, IRM and Vidrion R. Cavit and Vidrion R were worn aggressively by brushing. Conclusions The resin-based temporary filling Bioplic produced the best marginal seal, and was associated with the lowest water sorption, solubility and loss of mass.
Subject: loss of mass
marginal sealing
temporary filling
toothbrushing abrasion
water sorption
Country: EUA
Editor: Wiley-blackwell Publishing, Inc
Citation: International Endodontic Journal. Wiley-blackwell Publishing, Inc, v. 42, n. 10, n. 893, n. 899, 2009.
Rights: fechado
Identifier DOI: 10.1111/j.1365-2591.2009.01590.x
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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