E-ISSN 2548-0839
European Endodontic Journal The Influence of Humidity on Intra-tubular Penetration and Bond Strength of AH Plus and MTA Fillapex: An in Vitro Study []
. 2018; 3(1): 48-54 | DOI: 10.5152/eej.2017.17036

The Influence of Humidity on Intra-tubular Penetration and Bond Strength of AH Plus and MTA Fillapex: An in Vitro Study

Bruno Piazza, Melissa Esther Rivera- Peña, Murilo Priori Alcalde, Bruno Carvalho De Vasconcelos, Marco Antonio Húngaro Duarte, Ivaldo Gomes De Moraes, Rodrigo Ricci Vivan
Department of Operative Dentistry Endodontics and Dental Materials, University of São Paulo Bauru School of Dentistry, Bauru, Brazil

Objective: 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.

Keywords: Dentin, endodontics, humidity, material testing, root canal obturation

Bruno Piazza, Melissa Esther Rivera- Peña, Murilo Priori Alcalde, Bruno Carvalho De Vasconcelos, Marco Antonio Húngaro Duarte, Ivaldo Gomes De Moraes, Rodrigo Ricci Vivan. The Influence of Humidity on Intra-tubular Penetration and Bond Strength of AH Plus and MTA Fillapex: An in Vitro Study. . 2018; 3(1): 48-54

Corresponding Author: Rodrigo Ricci Vivan, Brazil

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