title: Sealing efficacy of a zinc oxide-eugenol cement, a cyanoacrylate, and a cavity varnish used as root canal cements.
abstract: Forty single-rooted human central incisor teeth were biomechanically instrumented. Thirty teeth were divided into three groups of 10 and obturated with laterally condensed gutta-percha and one of three cementing mediums. These were zinc oxide-eugenol root canal cement, cyanoacrylate, and cavity varnish. The remaining 10 teeth were not obturated and served as a control. All of the teeth were suspended in a 1% methylene blue dye for 1 wk. Following sectioning the apical dye penetration was measured, and the leakage values were subjected to statistical analysis. The results showed that the teeth obturated with zinc oxide-eugenol and cyanoacrylate, in conjunction with gutta-percha, exhibited less leakage than the cavity varnish and control groups. This finding was statistically significant (p less than 0.0001). There was, however, no significant difference detected between the zinc oxide-eugenol and cyanoacrylate groups.
authors.affiliation: College of Dentistry, University of Illinois at Chicago.
authors.forename: E L
authors.initials: EL
authors.lastname: Jacobsen
authors.forename: K A
authors.initials: KA
authors.lastname: Shugars
mesh_terms: D003487:Cyanoacrylates; D003738:Dental Cements; D003763:Dental Leakage / Q000517:prevention & control; D003764:Dental Materials; D006801:Humans; D007180:Incisor; D012116:Resins, Plant; D012389:Root Canal Obturation; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D003487:Cyanoacrylates; D003738:Dental Cements; D003764:Dental Materials; D012116:Resins, Plant; D015035:Zinc Oxide-Eugenol Cement; C023806:Copalite