title: Apical dye penetration with four root canal sealers and gutta-percha using longitudinal sectioning.
abstract: The purpose of this study was to compare the level of apical dye penetration when different sealers were used with lateral condensation of gutta-percha. Fifty teeth with single root canals were biomechanically prepared using the step-back technique and irrigation with 15% ethylenediaminetetraacetic acid with cetrimide and 1% NaOCl solutions. The teeth were divided into five groups of 10 teeth each. The control group root canals were filled with laterally condensed gutta-percha without sealer and the other four groups were filled with laterally condensed gutta-percha and either Apexit, Sealapex, Tubli-Seal, or AH-26 sealer. After storage in 100% humidity at 37 degrees C for 48 h, the root surfaces were coated with nail varnish (except at the apex), placed in 2% methylene blue dye solution, and centrifuged at 30 x g for 3 min. The roots were sectioned longitudinally to determine the following mean levels of dye penetration: AH-26, 0.48 mm; Apexit, 1.33 mm; Sealapex, 4.59 mm; Tubli-Seal, 5.58 mm; and gutta-percha alone, 7.99 mm. This study demonstrated that a root canal sealer should be used in conjunction with laterally condensed gutta-percha and that AH-26 sealer had significantly less dye penetration than the other three sealers while Apexit had significantly less dye penetration than Sealapex and Tubli-Seal. There was no significant difference between Sealapex and Tubli-Seal.
authors.affiliation: Dental School, University of Western Australia, Perth.
authors.forename: S
authors.initials: S
authors.lastname: Limkangwalmongkol
authors.forename: P V
authors.initials: PV
authors.lastname: Abbott
authors.forename: A B
authors.initials: AB
authors.lastname: Sandler
mesh_terms: D000704:Analysis of Variance; D001729:Bismuth; D002126:Calcium Hydroxide; D003763:Dental Leakage / Q000517:prevention & control*; D004338:Drug Combinations; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D008709:Methenamine; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods; D012459:Salicylates; D012834:Silver; D014025:Titanium; D015035:Zinc Oxide-Eugenol Cement
chemical_list: C074418:Apexit; D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012459:Salicylates; D015035:Zinc Oxide-Eugenol Cement; C055601:Sealapex; D012834:Silver; C028044:epoxy resin AH-26; C048769:tubliseal; D006171:Gutta-Percha; D014025:Titanium; D008709:Methenamine; D002126:Calcium Hydroxide; D001729:Bismuth