Journal article
Effect of endodontic retreatment on the bond strength of resin cements to root canal dentin
American journal of dentistry, Vol.32(3), pp.147-151
06/01/2019
PMID: 31295397
Abstract
Purpose: To evaluate the effect of endodontic retreatment on the bond strength of different cementation techniques (self-adhesive and conventional resin cement) through the push-out mechanical testing and the penetrability of resin cements to root dentin. Methods: 60 human teeth with single oval-shaped canals were used (n=15): G1 - Endodontic treatment and cementation with RelyX ARC (ETA); G2 - Endodontic treatment and cementation with U200 (ETU); G3 - Endodontic retreatment and cementation with RelyX ARC (ERA); G4 - Endodontic retreatment and cementation with U200 (ERU). The groups with conventional endodontic treatment were filled with AH plus (ETA and ETU), while the groups that were submitted to endodontic retreatment were initially filled with Endofill and afterwards with AH Plus. Each radicular third (cervical, middle, and apical, of each tooth) was submitted to push-out bond strength testing, followed by evaluation with confocal laser microscopy to determine the penetration of the resin cements, and scanning electron microscopy was used to evaluate the failure mode. The parametric data were evaluated by two-way ANOVA and Tukey tests, and non-parametric data by Kruskal-Wallis and Dunn tests (alpha< 0.05). Results: The ETA group had higher bond strength values to intra-radicular dentin than the other groups in all root thirds (P< 0.05). Endodontic retreatment had a negative impact on the penetration and push-out bond strength of RelyX ARC and U200 cement, regardless of the analyzed radicular third.
Details
- Title: Subtitle
- Effect of endodontic retreatment on the bond strength of resin cements to root canal dentin
- Creators
- Kamila de F. Pereira - Universidade Estadual Paulista (Unesp)Ana Carolina Vencao - Universidade Estadual Paulista (Unesp)Miriam G. Magro - Universidade Estadual Paulista (Unesp)Laurie G. Belizario - Universidade Estadual Paulista (Unesp)Thiago S. Porto - Case Western Reserve UniversityMarcelo F. de Andrade - Universidade Estadual Paulista (Unesp)Marco Antonio H. Duarte - Universidade Estadual Paulista (Unesp)Milton C. Kuga - Universidade Estadual Paulista (Unesp)
- Resource Type
- Journal article
- Publication Details
- American journal of dentistry, Vol.32(3), pp.147-151
- Publisher
- Mosher & Linder, Inc
- PMID
- 31295397
- ISSN
- 0894-8275
- Number of pages
- 5
- Language
- English
- Date published
- 06/01/2019
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984420942602771
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