title: Assessment of the apical seal of root canals using different filling techniques.
abstract: The aim of this study was to investigate the apical leakage of roots filled by three different gutta-percha techniques: lateral condensation, Tagger's hybrid and E&Q Master. Forty-two extracted single-rooted teeth were used. The coronal part of each tooth was removed and the root received biomechanical preparation using a 60-K file. The roots were randomly divided into three groups according to the technique of filling the root canal: Group I, lateral condensation; Group II, Tagger's hybrid; Group III, E&Q Master. The roots were submitted to dye leakage test with Rhodamine B for 7 days, using vacuum during the initial 30 min. The teeth were sectioned longitudinally and the leakage was measured in a linear fashion from apex to crown. Statistical analysis indicated that lateral condensation and E&Q Master techniques showed lower leakage than Tagger's technique (P = 0.0016). However, statistically no difference was found between lateral condensation and E&Q Master system techniques.
authors.affiliation: Clinical Research Academic Group, São José dos Campos School of Dentistry, São Paulo State University, SP, Brazil.
authors.forename: Marcela V
authors.initials: MV
authors.lastname: Leonardo
authors.forename: Edson H
authors.initials: EH
authors.lastname: Goto
authors.forename: Carlos R G
authors.initials: CR
authors.lastname: Torres
authors.forename: Alessandra B
authors.initials: AB
authors.lastname: Borges
authors.forename: Cláudio A T
authors.initials: CA
authors.lastname: Carvalho
authors.forename: Daphne C
authors.initials: DC
authors.lastname: Barcellos
mesh_terms: D000293:Adolescent; D000328:Adult; D004396:Coloring Agents; D003763:Dental Leakage / Q000175:diagnosis / Q000517:prevention & control*; D004853:Epoxy Resins; D006171:Gutta-Percha; D006801:Humans; D007180:Incisor; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods*; D019227:Tooth Apex; D055815:Young Adult
chemical_list: D004396:Coloring Agents; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C534916:epoxy resin-based root canal sealer; D006171:Gutta-Percha