Does the thickness of the resin cement affect the bond strength of a fiber post to the root dentin?
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Data
2006-11-01
Orientador
Coorientador
Pós-graduação
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Artigo
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Resumo
This study aimed to evaluate the influence of cement thickness on the bond strength of a fiber-reinforced composite (FRC) post system to the root dentin. Eighteen single-rooted human teeth were decoronated (length: 16 mm), the canals were prepared, and the specimens were randomly allocated to 2 groups (n = 9): group 1 (low cement thickness), in which size 3 FRC posts were cemented using adhesive plus resin cement; and group 2 (high cement thickness), in which size 1 FRC posts were cemented as in group 1. Specimens were sectioned, producing 5 samples (thickness: 1.5 mm). For cement thickness evaluation, photographs of the samples were taken using an optical microscope, and the images were analyzed. Each sample was tested in push-out, and data were statistically analyzed. Bond strengths of groups 1 and 2 did not show significant differences (P = .558), but the cement thicknesses for these groups were significantly different (P < .0001). The increase in cement thickness did not significantly affect the bond strength (r2 = 0.1389, P = .936). Increased cement thickness surrounding the FRC post did not impair the bond strength.
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Palavras-chave
All Bond 2, dentin bonding agent, Duo Link, phosphoric acid, resin cement, silane derivative, clinical trial, controlled study, dental acid etching, dental bonding, dental surgery, endodontics, materials testing, mechanical stress, randomized controlled trial, surface property, tooth crown, tooth pulp, ultrastructure, Dentin-Bonding Agents
Idioma
Inglês
Como citar
International Journal of Prosthodontics, v. 19, n. 6, p. 606-609, 2006.
