Comparative evaluation of push-out bond strength of a MTA-based root canal sealer

AUTOR(ES)

Gurgel-Filho, Eduardo Diogo, Leite, Felipe Martins, Lima, Jaírton Benício de, Montenegro, João Paulo Chaves, Saavedra, Flávia, Silva, Emmanuel João Nogueira Leal

FONTE

Braz. J. Oral Sci.

DATA DE PUBLICAÇÃO

2014-04

RESUMO

AIM: To evaluate the bond strength to root dentin of three root canal sealers: a mineral trioxide aggregate (MTA)-based sealer (MTA Fillapex(r)), an epoxy resin-based sealer (AH Plus(r)), and a zinc oxide eugenol-based sealer (EndoFill(r)). METHODS: Thirty extracted single-root human teeth of similar sizes and circular canals were prepared using #3 and #2 Gates Glidden drills in the cervical portion of the canal and K3(r) rotary instruments to a size #25/0.06 to working length. Irrigation with 0.5 mL 2% chlorhexidine gel was used before and 1 mL saline after each instrument.The smear layer was removed with 3 mL 17% EDTA for 3 min. The samples were sectioned horizontally into eight 1±0.1 mm-thick serial slices and then the push-out test was carried out. Two-way analysis of variance (ANOVA) and the post-hoc Tukey test were used for the analysis of the data with a significance level of 5%. RESULTS: AH Plus presented significantly higher bond strengths (p<0.05) than the other sealers, while MTA Fillapex showed the lowest bond strengths (p<0.05). CONCLUSIONS: The present study concluded that EndoFill(r) sealer and MTA FillApex(r) core combination were not superior to AH Plus(r) sealer and gutta-percha core combination.

Documentos Relacionados

• Push-out bond strength and SEM evaluation of a new bonding approach into the root canal
• Push-out Bond Strength of Root-end Filling Materials
• Push-out bond strength of MTA HP, a new high-plasticity calcium silicate-based cement
• Push-out bond strength of different tricalcium silicate-based filling materials to root dentin
• Effect of calcium hydroxide dressing on push-out bond strength of endodontic sealers to root canal dentin