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ENDO 12 (2018), No. 2     25. June 2018
ENDO 12 (2018), No. 2  (25.06.2018)

Page 119-123

Fracture resistance of roots filled with either a bioceramic or an epoxy resin-based sealer
Gervini, Maria Joana / Pacheco-Yanes, Juan / Gonçalves, Lucio / Lopes, Hélio P. / Vieira, Victor / Siqueira jr., José F. / Neves, Monica
Purpose: To assess the influence of two root canal filling systems on root fracture resistance.
Materials and methods: Thirty extracted single-canal mandibular premolars were decoronated to a length of 13 mm and randomly distributed into one control group (receiving no treatment) and two other groups according to the filling system used: bioceramic EndoSequence BC Sealer/BC Points; and AH Plus/conventional gutta-percha cones. Canals from the two experimental groups were prepared up to an instrument size 40/.04 and filled with the test system using the single cone technique. After storage at 100% humidity and 37°C for 2 weeks, each root was subjected to a compression test using a universal testing machine at 0.5 mm/min speed until vertical fracture occurred. Data were statistically analysed by the Kruskal-Wallis test, with the significance level set at P < 0.05.
Results: There was no significant difference between the load required to fracture roots filled with the two obturation systems (P > 0.05). Untreated roots showed a slightly higher fracture resistance value when compared to the treated ones, but not to the point of reaching statistical significance (P > 0.05).
Interpretation: Roots filled with either the EndoSequence BC system or AH Plus/gutta-percha showed statistically similar fracture resistance when compared with untreated roots.

The authors deny any conflicts of interest.

Keywords: bioceramic-coated points, bioceramic sealer, epoxy resin sealer, fracture resistance, root canal filling