Influence of root canal moisture conditions on the bond strength of endodontic sealers to dentin
DOI:
https://doi.org/10.33448/rsd-v11i11.33714Keywords:
Root canal filling materials; Bond strength; Dental stress analysis.Abstract
Objective: To investigate the influence of intraradicular moisture conditions on the bond strength of 3 different endodontic cements in the coronal, middle, and apical thirds of the root canal. Materials and Methods: 90 single-rooted teeth were instrumented with a reciprocal R#50 file and randomly divided into 3 experimental groups: Dry group: dry canals with absorbent paper tips; Moist group: suction syringe and capillary tip coupled to a vacuum pump; Wet group: aspiration with endodontic suction. The groups were divided according to the endodontic sealer used: AH plus (Denstply), Hiflow (Brasseler) and Bio-c Sealer (Angelus). Obturation was performed using Tagger's hybrid technique with a single cone. The teeth were subjected to the "push-out" test to evaluate the bond strength of the cements. Results: Data were analyzed using the Kolgomorov-Smirnoff normal distribution test and the Mann Whitney U test to compare means within and between groups. The standard error established was 5% at a significance level of 95%. AH plus showed better results regardless of canal moisture conditions. Hiflow showed better bond strength in the dry group compared to the moist group (p=0.023) in the cervical area. Bio-C Sealer showed no statistically significant differences (p > 0.05). Conclusion: Moisture conditions affected the bond strength values of endodontic cements. The prevalence of failure moduli was mixed in all root thirds, regardless of the cement used.
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Copyright (c) 2022 Michelle Araújo Cabral; Ana Grasiela da Silva Limoeiro; Alexandre Sigrist De Martin; Carlos Eduardo Fontana; Rina Andrea Pelegrine; Carlos Eduardo da Silveira Bueno; Daniel Guimarães Pedro Rocha
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