Adhesion of Epiphany Self-etch Sealer to Dentin Treated with Intracanal Irrigating Solutions

Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
Journal of endodontics (Impact Factor: 3.38). 02/2011; 37(2):228-30. DOI: 10.1016/j.joen.2010.11.016
Source: PubMed


This in vitro study assessed the adhesion of Epiphany self-etch (SE) root canal sealer to dentin treated with different irrigation regimens.
Flat dentin surfaces were obtained from human third molar teeth; smear layer was created on each sample. Five groups of 10 samples each were conditioned with one of the following regimens: (1) deionized water for 10 minutes; (2) 5% sodium hypochlorite (NaOCl) for 10 minutes; (3) 5% NaOCl for 10 minutes and then 10% sodium ascorbate (Na-Ascr) for 10 minutes; (4) 5% NaOCl for 10 minutes and then 2% chlorhexidine (CHX) for 5 minutes; or (5) 5% NaOCl for 10 minutes and then 10% Na-Ascr for 10 minutes, followed by 2% CHX for 5 minutes. The conditioned dentin surfaces were dried with absorbent paper points. The Epiphany SE sealer was placed on each dentin surface with the use of hollow stainless steel tubes with specific diameter and height. The samples were stored in 100% humidity at 37°C for 7 days and then tested for shear bond strength in a universal testing machine.
Shear bond strength data were analyzed by one-way analysis of variance and Tukey post hoc tests (P < .05). There were statistically significant differences among the groups.
NaOCl decreased the bond strength of Epiphany SE sealer to dentin, whereas the use of Na-Ascr reversed this negative effect of NaOCl. CHX had neither negative nor positive influence on the bond strength.

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    • "enhancing the possibility of forming a higher density hybrid layer. Since the Epiphany TM SE (Self Etch) development this root canal sealer has been widely studied (Nassar et al., 2011; Prado et al., 2013; Shokouhinejad et al., 2010; Versiani et al., 2006). The main difference of this material to the epoxy-amine resin-based sealers, is related to the self-etch primer incorporation to the sealer, eliminating the separate priming step. "
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    ABSTRACT: This study assessed the influence of different endodontic chemical substances on the adhesion of the Epiphany SE/Resilon system (with and without resinous solvent) to radicular dentin walls, using the push-out test and scanning electron microscopy (SEM). Forty-eight root canals of human canines were prepared biomechanically with ProTaper rotary files (crown-down technique) and the radicular dentin was treated with either 17% EDTA, 2% chlorhexidine gel (CHX) or 2.5% NaOCl (control). The root canals were filled with Resilon cones and Epiphany SE sealer with and without resinous solvent. Six groups of eight canals each had their roots sectioned transversally to obtain 1-mm thick slices. Data were subjected to statistical analysis by ANOVA and Tukey's tests. The specimens treated with 17% EDTA (1.59 ± 0.91) presented higher bond strength (P < 0.05) than those treated with 2.5% NaOCl (0.93 ± 0.27) and 2% CHX (0.92 ± 0.22). Significantly higher bond strength (P < 0.05) was observed when the Epiphany SE was prepared with (1.37 ± 0.78) than without (0.92 ± 0.33) solvent. Adhesive failures were predominant in all groups. SEM analysis showed greater homogeneity of the filling mass when the solvent was added to the sealer. Treatment of root canal walls with 17% EDTA, and addition of a resinous solvent to Epiphany SE produced the highest adhesion to radicular dentin. Microsc. Res. Tech., 2014. © 2014 Wiley Periodicals, Inc.
    Microscopy Research and Technique 06/2014; 77(6). DOI:10.1002/jemt.22365 · 1.15 Impact Factor
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    • "However, the manufacturer recommends the use of EDTA as the last irrigant followed by rinsing of the canal with sterile water or 2% CHX. It has been stated that exposure to NaOCl results in reduced bond strengths of Epiphany self-etch sealer [25]. "
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    ABSTRACT: To assess the effects of different final irrigants on the bond strength of bonded root filling materials, Epiphany/Resilon and Epiphany self-etch (SE)/Resilon. The root canals of eighty single-rooted extracted human teeth were prepared. After the smear layer was removed using 17% EDTA, the samples were randomly divided into eight groups. In groups 1 and 2, no additional irrigant was used after EDTA. In the other groups, final irrigation was performed with 2.5% NaOCl (groups 3 and 4), 2% chlorhexidine (CHX) (groups 5 and 6), and normal saline (groups 7 and 8). The root canals were obturated with Epiphany/Resilon in groups 1, 3, 5 and 7 and obturated with Epiphany SE/Resilon in groups 2, 4, 6 and 8. After the middle thirds of the roots were horizontally sectioned, the push-out bond strength of root filling materials was assessed using the universal testing machine. The data were analyzed using Mann-Whitney and Kruskal-Wallis tests. The significance level was set at p<0.05. There was no significant difference between the push-out bond strength of Epiphany/Resilon and Epiphany SE/Resilon (p>0.05). Considering the irrigation protocols, final irrigation with 2.5% NaOCl was associated with a significantly lower bond strength of both filling materials than the other irrigants (p<0.05). EDTA, CHX and normal saline had similar effects on the bond strengths of filling materials (p>0.05). Final irrigation of the root canals with 2.5% NaOCl following application of EDTA had a negative effect on the bond strength of Epiphany and Epiphany SE obturation systems.
    05/2013; 10(4):296-302.
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    • "Absolute alcohol has also been suggested as an intermediate flush but its biocompatibility with the periapical tissues and interactions with other irrigants remain a concern (Krishnamurthy & Sudhakaran 2010, Valera et al. 2010). In addition, Nassar et al. (2011) recommended the use of sodium ascorbate to prevent the formation of this precipitate. Similarly, ascorbic acid solution, as a reducing agent, has been advocated as an intermediate flush between NaOCl and MTAD, to prevent the oxidation effect of NaOCl and to avoid the photodegradation of the doxycycline that is present in MTAD (Tay et al. 2006a). "
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    ABSTRACT: Ahmed HMA, Abbott PV. Discolouration potential of endodontic procedures and materials: a review. International Endodontic Journal, 45, 883–897, 2012. Advances in endodontic materials and techniques are at the forefront of endodontic research. Despite continuous improvements, tooth discolouration, especially in anterior teeth, is considered an undesirable consequence following endodontic treatment as it creates a range of aesthetic problems. This article aims to discuss the intrinsic and internalized tooth discolouration caused by endodontic procedures, and to address the discolouration potential of materials used during root canal treatment, including root canal irrigants, intra-canal medicaments, endodontic and post-endodontic filling materials. In addition, the discolouration patterns caused by combined endodontic and nonendodontic aetiological factors are discussed. The recommended guidelines that should be followed by dental practitioners to prevent and manage tooth discolouration are also outlined.
    International Endodontic Journal 10/2012; 45(10):883-897. DOI:10.1111/j.1365-2591.2012.02071.x · 2.97 Impact Factor
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