Recently, various calcium silicate-based sealers have been introduced for use in root
canal filling. The MTA Fillapex is one of these sealers, but some of its
physicochemical properties are not in accordance with the ISO requirements.ObjectiveThe aim of this study was to evaluate the flowability, pH level and calcium
release of pure MTA Fillapex (MTAF) or containing 5% (MTAF5) or 10% (MTAF10)
calcium hydroxide (CH), in weight, in comparison with AH Plus sealer.Material and MethodsThe flowability test was performed according to the ISO 6876:2001 requirements.
For the pH level and calcium ion release analyses, the sealers were placed
individually (n=10) in plastic tubes and immersed in deionized water. After 24
hours, 7 and 14 days, the water in which each specimen had been immersed was
evaluated to determine the pH level changes and calcium released. Flowability, pH
level and calcium release data were analyzed statistically by the ANOVA test
(α=5%).ResultsIn relation to flowability: MTAF>AH Plus>MTAF5>MTAF10. In relation to the
pH level, for 24 h: MTAF5=MTAF10=MTAF>AH Plus; for 7 and 14 days:
MTAF5=MTAF10>MTAF>AH Plus. For the calcium release, for all periods:
MTAF>MTAF5=MTAF10>AH Plus.ConclusionsThe addition of 5% CH to the MTA Fillapex (in weight) is an alternative to reduce
the high flowability presented by the sealer, without interfering in its
alkalization potential.
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