1. Evaluation of recementation protocols for dislodged glass fiber posts.
- Author
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Nogueira Simões, Ísis Ingrid, Moreira da Silva, Eduardo, Gonçalves Penelas, Alice, Tatiana Poskus, Laiza, Botelho dos Santos, Glauco, and Antunes Guimarães, José Guilherme
- Subjects
GLASS fibers ,HYDROGEN peroxide ,SURFACE preparation ,BOND strengths ,DENTAL pulp cavities - Abstract
Purpose: To evaluate different protocols for recementation of dislodged glass fiber posts (GFPs).Materials and Methods: The root canals of 50 bovine incisors were prepared to receive GFPs, which were conditioned with 24% hydrogen peroxide, silanized, and cemented with a self-adhesive resin cement. After light curing, the specimens were submitted to a pullout test. The dislodged GPFs were distributed into five experimental groups (n = 10 each) according to surface treatment for recementation: NT = no treatment; SI = silane; ET = 92.8% ethanol/silane; HP = 24% hydrogen peroxide/silane; AL = airborne-particle abrasion (50-μm alumina)/silane. The GFPs were recemented with the same self-adhesive resin cement, and specimens were submitted to a second pullout test. Data were analyzed by Student t test and one-way ANOVA (α = .05).Results: For all groups, the recementation bond strength was higher than the strength obtained after the first cementation (P < .05). There were no statistical differences among the experimental recementation protocols (P = .096).Conclusion: All recementation protocols might be reliably applied since they led to higher bond strength than the first cementation. [ABSTRACT FROM AUTHOR]- Published
- 2023
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