title: Penetration of a resin-based filling material into lateral root canals and quality of obturation by different techniques.
abstract: The aim of this study was to evaluate the penetration of a resin/polyester polymer-based material (Resilon Real Seal; SybronEndo Corp., Orange, USA) into simulated lateral canals, and the quality of obturations by different techniques. A total of 30 standardized simulated canals were divided into three groups according to the technique of obturation used: MS (McSpadden), SB (SystemB/Obtura II), and LC (Lateral Condensation). To analyze the penetration of the filling material, the simulated canals were digitalized and the images were analyzed using the Leica QWIN Pro v2.3 software. The data of the middle and apical thirds were separately submitted to analysis of variance (ANOVA), followed by the Tukey's test for the comparison of the techniques. Results showed a significant difference (p < 0.05) between groups (LC < SB) in the middle third, and a significant difference (p < 0.05) between groups (LC < SB and MS < SB) in the apical third. To analyze the quality of the obturations, the canals were radiographed and evaluated by three examiners. The Kappa test on interexaminer agreement and the nonparametric Kruskal-Wallis test indicated no significant difference between filling techniques. It was concluded that Resilon achieves greater levels of penetration when associated with thermoplastic obturation techniques.
authors.affiliation: School of Dentistry, Universidade Tuiuti do Paraná, Curitiba, PR, Brazil.
authors.forename: André Luiz da Costa
authors.initials: AL
authors.lastname: Michelotto
authors.affiliation: School of Dentistry, Universidade Cruzeiro do Sul,, São Paulo, SP, Brazil.
authors.forename: Cacio
authors.initials: C
authors.lastname: Moura-Netto
authors.affiliation: School of Dentistry, Universidade Cruzeiro do Sul,, São Paulo, SP, Brazil.
authors.forename: Angela Toshie
authors.initials: AT
authors.lastname: Araki
authors.affiliation: School of Dentistry, Universidade Santa Cecilia, Santos, SP, Brazil.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Akisue
authors.affiliation: School of Dentistry, Universidade Federal do Paraná, Curitiba, PR, Brazil.
authors.forename: Gilson Blitzkow
authors.initials: GB
authors.lastname: Sydney
mesh_terms: D000704:Analysis of Variance; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging / Q000187:drug effects*; D006171:Gutta-Percha / Q000737:chemistry; D008422:Materials Testing; D011091:Polyesters / Q000737:chemistry; D011859:Radiography; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods*; D018709:Statistics, Nonparametric
chemical_list: D011091:Polyesters; D012387:Root Canal Filling Materials; C113130:obtura II; C486892:resilon sealer; D006171:Gutta-Percha