title: An in vitro evaluation of microleakage of a new root canal sealer.
abstract: An in vitro dye leakage study was performed to compare the apical microleakage of Ketac-Endo root canal sealer with that of Roth's 801E and AH26 sealers. Sixty-four single-rooted human teeth were instrumented and randomly divided into four groups. Three groups were obturated with laterally condensed gutta-percha and either Roth's 801E, AH26, or Ketac-Endo as the sealer. A fourth group was obturated using a single master cone and the Ketac-Endo sealer. The teeth were suspended in 1% methylene blue dye for 6 days. The teeth were then longitudinally sectioned and evaluated for linear apical dye penetration. In general, Ketac-Endo root canal sealer showed greater dye penetration than Roth's 801E and AH26. There was no statistical difference in leakage between the laterally condensed Ketac-Endo group and the single-cone-obturated Ketac-Endo group.
authors.affiliation: Naval Dental School, Bethesda, MD, USA.
authors.forename: T R
authors.initials: TR
authors.lastname: Rohde
authors.forename: J D
authors.initials: JD
authors.lastname: Bramwell
authors.forename: J W
authors.initials: JW
authors.lastname: Hutter
authors.forename: J O
authors.initials: JO
authors.lastname: Roahen
mesh_terms: D000704:Analysis of Variance; D001729:Bismuth; D003763:Dental Leakage; D004338:Drug Combinations; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; D006801:Humans; D008709:Methenamine; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods*; D012834:Silver; D018709:Statistics, Nonparametric; D014025:Titanium; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D004338:Drug Combinations; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; C074934:Ketac Endo; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; D012834:Silver; C028044:epoxy resin AH-26; C074935:Roth's 801 Sealer; D014025:Titanium; D008709:Methenamine; D001729:Bismuth