title: Evaluation of Thermafil obturation of curved canals prepared by the Canal Master-U system.
abstract: A dye penetration study was performed to compare the apical seals obtained with laterally condensed gutta-percha and Thermafil. The sample group contained 40 teeth with curved canals which had been prepared with the Canal Master-U System. Canal curvature was measured and the teeth were decalcified, cleared, and linear dye penetration was measured. Thermafil had statistically more linear leakage as verified by a Wilcoxon test (p < 0.001). Thermafil also had greater variability in the apical seal than did laterally condensed gutta-percha as verified by an F test (p < 0.001). A Spearman correlation analysis (p > 0.05) showed that there was no correlation between root curvature and linear dye penetration.
authors.forename: W
authors.initials: W
authors.lastname: Barkins
authors.forename: S
authors.initials: S
authors.lastname: Montgomery
mesh_terms: D000704:Analysis of Variance; D003737:Dental Cavity Preparation / Q000295:instrumentation*; D003763:Dental Leakage / Q000517:prevention & control*; D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D005069:Evaluation Studies as Topic; D006171:Gutta-Percha; D006801:Humans; D015588:Observer Variation; D012389:Root Canal Obturation / Q000379:methods*
chemical_list: D006171:Gutta-Percha