title: Efficacy of three thermoplastic obturation techniques in filling oval-shaped root canals.
abstract: The purpose of this study was to assess the efficacy of the thermoplastic filling techniques, Touch'n Heat®, TC® System and Tagger's Hybrid Technique, in oval-shaped canals at the apical third.Thirty-three human uniradicular lower pre-molar teeth were treated by the reciprocating movement technique and were subsequently split into 3 groups, according to the filling technique performed:Touch'n Heat (TH), TC System (TC) and the Tagger's Hybrid Technique (TG).In the sequence, the teeth were sectioned at 2mm and 4mm from the foramen and images were taken to measure the percentage of canal area filled with the obturation materials as well as void spaces.Data were submitted for Kruskal-Wallis statistical analysis. Irrespective of levels, data showed that the TC System delivered the best results.(p<0,001).At 2mm and 4mm levels, there was no difference between the TG technique and the TH technique (p<0,001).With all the techniques and at all levels, no differences were observed regarding the void area variable.(p>0,001).The techniques evaluated showed an adequate filling with obturation materials and the TC has reached the highest filling with the guta-percha material.
authors.affiliation: Department of Endodontics, School of Dentistry Federal University of Mato Grosso do Sul, Campo Grande - Mato Grosso do Sul, Brazil.
authors.forename: Amanda B
authors.initials: AB
authors.lastname: Farias
authors.affiliation: Department of Endodontics, School of Dentistry Federal University of Mato Grosso do Sul, Campo Grande - Mato Grosso do Sul, Brazil. keyendo@hotmail.com.
authors.forename: Key Fs
authors.initials: KF
authors.lastname: Pereira
authors.affiliation: Department of Endodontics, School of Dentistry Federal University of Mato Grosso do Sul, Campo Grande - Mato Grosso do Sul, Brazil.
authors.forename: Daniele Z
authors.initials: DZ
authors.lastname: Beraldo
authors.affiliation: Department of Endodontics, School of Dentistry Federal University of Mato Grosso do Sul, Campo Grande - Mato Grosso do Sul, Brazil.
authors.forename: Franciely Ms
authors.initials: FM
authors.lastname: Yoshinari
authors.affiliation: Department of Endodontics, School of Dentistry Federal University of Mato Grosso do Sul, Campo Grande - Mato Grosso do Sul, Brazil.
authors.forename: Fabio N
authors.initials: FN
authors.lastname: Arashiro
authors.affiliation: Department of Public Health, School of Dentistry Federal University of Mato Grosso do Sul, Campo Grande - Mato Grosso do Sul, Brazil.
authors.forename: Edilson J
authors.initials: EJ
authors.lastname: Zafalon
mesh_terms: D003764:Dental Materials; D006801:Humans; D066298:In Vitro Techniques; D012389:Root Canal Obturation / Q000379:methods*; D016896:Treatment Outcome
chemical_list: D003764:Dental Materials
keywords: Endodontics; dental materials; root canal therapy