title: Effect of endodontic chelating solutions on the bond strength of endodontic sealers.
abstract: The purpose of this in vitro study was to evaluate the effect of various chelating solutions on the radicular push-out bond strength of calcium silicate-based and resin-based root canal sealers. Root canals of freshly-extracted single-rooted teeth (n = 80) were instrumented by using rotary instruments. The specimens were randomly divided into 4 groups according to the chelating solutions being tested: (1) 17% ethylenediaminetetraacetic acid (EDTA); (2) 9% etidronic acid; (3) 1% peracetic acid (PAA); and (4) distilled water (control). In each group, the roots were further assigned into 2 subgroups according to the sealer used: (1) an epoxy resin-based sealer (AH Plus) and (2) a calcium silicate-based sealer (iRoot SP). Four 1 mm-thick sections were obtained from the coronal aspect of each root (n = 40 slices/group). Push-out bond strength test was performed at a crosshead speed of 1 mm/min., and the bond strength data were analyzed statistically with two-way analysis of variance (ANOVA) with Bonferroni's post hoc test (p < 0.05). Failure modes were assessed quantitatively under a stereomicroscope. Irrespective of the irrigation regimens, iRoot SP exhibited significantly higher push-out bond strength values than AH Plus (p < 0.05). For both the sealers, the use of chelating solutions increased the bond strength, but to levels that were not significantly greater than their respective controls (p > 0.05). iRoot SP showed higher resistance to dislocation than AH Plus. Final irrigation with 17% EDTA, 9% Etidronic acid, and 1% PAA did not improve the bond strength of AH Plus and iRoot SP to radicular dentin.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Behram
authors.initials: B
authors.lastname: Tuncel
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Emre
authors.initials: E
authors.lastname: Nagas
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Zafer
authors.initials: Z
authors.lastname: Cehreli
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors.forename: Ozgur
authors.initials: O
authors.lastname: Uyanik
authors.affiliation: Department of Biomaterials Science, Institute of Dentistry, University of Turku, Turku, Finland.
authors.forename: Pekka
authors.initials: P
authors.lastname: Vallittu
authors.affiliation: Department of Biomaterials Science, Institute of Dentistry, University of Turku, Turku, Finland.
authors.forename: Lippo
authors.initials: L
authors.lastname: Lassila
mesh_terms: D000704:Analysis of Variance; D002614:Chelating Agents / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003786:Dental Pulp Cavity / Q000187:drug effects*; D019232:Dental Restoration Failure; D003804:Dentin / Q000187:drug effects*; D004492:Edetic Acid / Q000737:chemistry; D012968:Etidronic Acid / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D010463:Peracetic Acid / Q000737:chemistry; D011897:Random Allocation; D015203:Reproducibility of Results; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000737:chemistry*; D013499:Surface Properties / Q000187:drug effects; D013997:Time Factors
chemical_list: D002614:Chelating Agents; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D004492:Edetic Acid; D010463:Peracetic Acid; D012968:Etidronic Acid