title: An evaluation of apical leakage of a glass ionomer root canal sealer.
abstract: An in vitro dye leakage study was performed to compare the apical microleakage of a glass ionomer root canal sealer to Roth's 801 sealer. Forty-five single-rooted teeth were randomly divided into three groups: Ketac-Endo, Roth's 801, and the control group (no sealer). All groups were instrumented using a step-back technique and obturated with laterally condensed gutta-percha. The teeth were placed in a vacuum chamber under a pressure of 710 torr for 15 min and then immersed in India ink under vacuum for 24 h. The teeth were allowed to passively stain for 4 days and were cleared and evaluated for linear dye leakage using a binocular dissecting microscope. Statistical analysis revealed that sealer significantly improves the apical seal of laterally condensed gutta-percha. However, the apical seal exhibited by Ketac-Endo was not significantly different from that provided by Roth's 801 sealer.
authors.affiliation: Department of Endodontics, West Virginia University.
authors.forename: R C
authors.initials: RC
authors.lastname: Brown
authors.forename: C R
authors.initials: CR
authors.lastname: Jackson
authors.forename: A E
authors.initials: AE
authors.lastname: Skidmore
mesh_terms: D000704:Analysis of Variance; D003763:Dental Leakage / Q000517:prevention & control*; D005899:Glass Ionomer Cements; D006801:Humans; D015588:Observer Variation; D011897:Random Allocation; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D005899:Glass Ionomer Cements; C074934:Ketac Endo; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C074935:Roth's 801 Sealer