European Endodontic Journal

Yazarlar: Bruno Piazza, Melissa Esther Rivera- Peña, Murilo Priori Alcalde, Bruno Carvalho De Vasconcelos, Marco Antonio Húngaro Duarte, Ivaldo Gomes De Moraes, Rogo Ricci Viva

Konular:-

DOI:10.5152/eej.2017.17036

Anahtar Kelimeler: Bioactive materials,Dentin,Endodontics,Humidity,Material testing,Root canal obturation

Özet: The aim of this study was to evaluate the influence of humidity on the intra-tubular penetration, bond strength and failure mode associated with AH Plus (AH) and MTA Fillapex (MTAF) sealers. Methods: For this analysis, an apparatus was created to maintain the humidity of the specimens. Sixty bovine single-rooted teeth with similar anatomy were used. The teeth were randomly divided into 4 groups (N=15): G1 - AH/moist, G2 - AH/dry, G3 - MTAF/moist and G4 - MTAF/dry. A laser scanning confocal microscope was used to analyse the penetrability of the sealers into the dentinal tubules. A push-out test was performed to examine the diameter and height of the root canal fillings. The failure mode was analysed under a stereomicroscope at 40× magnification. The data were submitted to non-parametric Kruskal-Wallis and Dunn’s tests. The significance level was P<0.05. Results: The MTAF sealer exhibited higher intra-tubular penetration values compared to AH Plus (P<0.05) sealer. AH Plus showed the highest bond strength values. Regarding the type of failure mode, a majority of cohesive failures was identified, irrespective of the moisture conditions, which were not statistically significant among the sealers (P<0.05). Conclusion: Humidity conditions did not influence the intra-tubular penetration, bond strength and failure mode of AH Plus and MTAF sealers.

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