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- Title
Impact of Heating Exposure on the Micro-Push-Out Bond Strength of Bioceramic Sealers.
- Authors
Rodrigues Cândido Lopes, Guilherme; Paz Dotto, Maria Eduarda; Hideo Nomura, Lincon; Peressoni Vieira Schuldt, Daniela; Garcia, Lucas da Fonseca Roberti; da Silveira Teixeira, Cleonice
- Abstract
Introduction. The aim of this study was to evaluate the effect of heating of bioceramic and epoxy resin-based sealers on their micro-push-out bond strength (BS) to root canal dentin. Methods. After criterial selection, 30 human teeth were decoronated and 1-mm thick slices (n = 60) were obtained perpendicularly along tooth axis, from cervical and middle root thirds, with a diamond disc attached to a cutting machine. In each slice, three 1.0-mm diameter orifices were made. After rinsing with 17% EDTA and 2.5% NaOCl, each orifice was filled with Bio-C Sealer or BioRoot RCS or AH Plus, according to the manufacturers' instructions. After filling, half of the slices (n = 30) were heated at 100°C for 1 min, and the other half were kept at room temperature. After 7 days-controlled storage, micro-push-out test was performed in a Universal Testing Machine. Failures were analyzed using a stereomicroscope. Statistical analysis was performed with One-Way ANOVA and post hoc Tukey (α = 5%) tests. Results. AH Plus demonstrated higher BS values after heating (p = 0.001) when compared to nonheated. The other sealers did not show a statistically significant difference (p > 0.05). When heated, the average BS values for AH Plus were higher than for BioRoot RCS and Bio-C Sealer (p < 0.001). Cohesive failure mode was the most frequent, followed by adhesive and mixed ones. Conclusion. Heating provided a higher push-out BS to root dentin for AH Plus and did not influence BioRoot RCS or Bio-C sealer.
- Subjects
BOND strengths; PIT & fissure sealants (Dentistry); CUTTING machines; FAILURE mode & effects analysis; DENTAL pulp cavities
- Publication
International Journal of Dentistry, 2023, p1
- ISSN
1687-8728
- Publication type
Academic Journal
- DOI
10.1155/2023/3327275