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Bovine teeth can reliably substitute human dentine in an intra-tooth push-out bond strength model?
- Source :
-
International endodontic journal [Int Endod J] 2019 Jul; Vol. 52 (7), pp. 1063-1069. Date of Electronic Publication: 2019 Feb 20. - Publication Year :
- 2019
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Abstract
- Aim: To investigate the reliability of using bovine teeth as an alternative to human teeth in an intra-tooth push-out model by comparing the bond strength of three root canal sealers in both tooth substrates.<br />Methodology: From human and bovine incisors (12 per group), one 1-mm disc was obtained from each root. On each disc, three standard 0.8-mm-diameter holes were drilled through the dentine. After irrigation, the holes were filled with one of three root canal sealers: AH Plus, MTA Fillapex or Total Fill BC Sealer. Tooth slices were kept in contact with sterile gauze moistened in PBS solution (pH = 7.2) for 7 days at 37 °C, and finally, a push-out load was applied until sealer dislocation. The bonded interface area was calculated to obtain data in MPa. The push-out data for each sealer and the overall push-out data for human and bovine teeth were compared (Mann-Whitney U). Kruskal-Wallis was used to study the sealers behaviour at each of the dental substrates. Multiple comparisons were performed using Mann-Whitney U after Bonferroni correction (P < 0.05).<br />Results: Dentine substrate did not influence the push-out of either individual sealers or overall sealers tested (Mann-Whitney U, P > 0.05). In both human and bovine samples, AH Plus performed better than BC Sealer and MTA Fillapex, whilst BC Sealer also provided a superior push-out compared to MTA Fillapex (Mann-Whitney U, P < 0.05).<br />Conclusion: When using an intra-tooth model, bovine teeth did not significantly influence the bond strength of sealers.<br /> (© 2019 International Endodontic Journal. Published by John Wiley & Sons Ltd.)
Details
- Language :
- English
- ISSN :
- 1365-2591
- Volume :
- 52
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- International endodontic journal
- Publication Type :
- Academic Journal
- Accession number :
- 30697770
- Full Text :
- https://doi.org/10.1111/iej.13085