Push-Out Bond Strength of Dorifill, Epiphany and MTA-Fillapex Sealers to Root Canal Dentin with and without Smear Layer.
Open Access
- 7 October 2014
- journal article
- Vol. 9 (4), 246-50
Abstract
The aim of the present experimental study was to evaluate the push-out bond strength of Dorifill, Epiphany and MTA-Fillapex sealers to root canal dentin in presence and absence of smear layer (SL). Sixty human single-rooted teeth were selected and divided into six groups (n=10). The canal irrigation protocol in groups 1, 3 and 5 consisted of 2.5% NaOCl during instrumentation and normal saline at the end of preparation plus a 5-min irrigation with 17% ethylenediaminetetraacetic acid (EDTA). In the remaining groups, normal saline was used for canal irrigation. The root canals were filled with Epiphany/Resilon (groups 1 and 2), Dorifill/gutta-percha (groups 3 and 4) and MTA-Fillapex/gutta-percha (groups 5 and 6). After two weeks of storage in 95% relative humidity at 37(º)C, 2 mm-thick dentin disks were prepared from coronal third of each root. The push-out bond strength test was carried out using a universal testing machine. Data were analyzed with the two-way ANOVA and post hoc Tukey's tests. Statistical significance was defined at 0.05. The highest (3.06±0.38 MPa) and lowest (1.16±0.32 MPa) push-out bond strength values were recorded in Epiphany/Resilon-NaOCl/EDTA and Dorifill/gutta-percha/normal saline groups, respectively. There were significant differences in the bond strength of sealers (P<0.05). In addition, elimination of the SL significantly increased the bond strength of all sealers (P<0.05). The Epiphany/Resilon group exhibited the highest push-out bond strength in the presence and absence of the SL. Elimination of the SL resulted in a significant increase in the bond strength of all the sealers to dentin.Keywords
This publication has 41 references indexed in Scilit:
- Effect of intracanal irrigants on the bond strength of epoxy resin‐based and methacrylate resin‐based sealers to root canal wallsInternational Endodontic Journal, 2011
- Push‐out bond strength of two new calcium silicate‐based endodontic sealers to root canal dentineInternational Endodontic Journal, 2011
- Evaluation of the effect of MTAD in comparison with EDTA when employed as the final rinse on the shear bond strength of three endodontic sealers to dentineAustralian Endodontic Journal, 2010
- Correlation between sealer penetration and microleakage following the use of MTAD as a final irrigantAustralian Endodontic Journal, 2010
- Adhesion of an endodontic sealer to dentin and gutta-percha: shear and push-out bond strength measurements and SEM analysisJournal of Applied Oral Science, 2009
- Dislocation resistance of ProRoot Endo Sealer, a calcium silicate‐based root canal sealer, from radicular dentineInternational Endodontic Journal, 2008
- Influence of smear layer on depth of penetration of three endodontic sealers: an SEM studyDental Traumatology, 2007
- Ex vivo study of the adhesion of an epoxy‐based sealer to human dentine submitted to irradiation with Er : YAG and Nd : YAG lasersInternational Endodontic Journal, 2005
- The adhesion between fiber posts and root canal walls: comparison between microtensile and push‐out bond strength measurementsEuropean Journal of Oral Sciences, 2004
- Push‐out strength and SEM evaluation of resin composite bonded to internal cervical dentinDental Traumatology, 1996