ArticleClinical and experimental dental research2026
Influence of Calcium Silicate-Based Cement-Repaired Root Canals on Push-Out Bond Strength of Glass Fiber Posts: An In Vitro Study.
Article in Clinical and experimental dental research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesThis study aimed to compare the push-out bond strength of glass fiber posts cemented with self-etch and self-adhesive resin cements in various sizes of perforated roots repaired by calcium silicate-based cement. MATERIALS AND
methodsHuman premolars were divided into six groups based on perforation size (none, 0.8 mm, or 1.4 mm) and type of resin cement: self-etch adhesive (SE) and self-adhesive (SA) (n = 12). Root perforations were created using a cylindrical diamond bur and repaired with calcium silicate-based cement, then stored in distilled water at 37°C for 7 days. Fiber posts were cemented with either SE or SA resin cement. Specimens were embedded in epoxy resin, stored for 24 h at 37°C, then sectioned into 2 ± 0.1 mm slices. Push-out testing was conducted using a universal testing machine at 1 mm/min. Data were analyzed by two-way ANOVA and Tukey's test (p < 0.05). Failure modes were examined under SEM.
resultsPerforation size significantly influenced bond strength. The 1.4 mm group showed lower bond strength (13.07 ± 3.01 MPa) than the 0.8 mm and control groups (16.74 ± 2.63 MPa and 17.13 ± 2.89 MPa; p < 0.05). However, the type of resin cement did not significantly affect bond strength between groups (SE: 15.00 ± 3.63 MPa; SA: 16.23 ± 2.96 MPa; p > 0.05).
conclusionsLarger root perforations repaired with calcium silicate-based cement result in reduced push-out bond strength of fiber posts. No significant difference in bond strength was found between SE and SA resin cement.
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