title: Dye penetration in root canals filled with AH26 in different consistencies.
abstract: It is recommended that the powder to liquid ratio of AH26 be very high and that the mixture be warmed to decrease viscosity before insertion into the root canal. In this study, the effectiveness of the powder to liquid ratio and temperature were assessed using 60 root canals of maxillary central incisors randomly divided into four groups after their cleaning and shaping. The teeth were obturated by either lateral condensation or the single-cone technique using AH26 warmed or at room temperature. After exposure to basic fuchsin, the teeth were embedded and cross-sectioned using a diamond saw. The dye penetration was measured microscopically and reported as a percentage of the total circumference of the filling of each slice using a goniometric eye-piece. After statistical analysis, it was concluded that AH26 in combination with lateral condensation leads to less leakage when used at room temperature.
authors.affiliation: Department of Operative Dentistry and Endodontics, Policlinics North, FU Berlin, Germany.
authors.forename: C R
authors.initials: CR
authors.lastname: Barthel
authors.forename: G M
authors.initials: GM
authors.lastname: Lösche
authors.forename: S
authors.initials: S
authors.lastname: Zimmer
authors.forename: J F
authors.initials: JF
authors.lastname: Roulet
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D003763:Dental Leakage / Q000517:prevention & control*; D004338:Drug Combinations; D004853:Epoxy Resins; D006801:Humans; D008709:Methenamine / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods*; D012834:Silver / Q000737:chemistry*; D018709:Statistics, Nonparametric; D014025:Titanium / Q000737:chemistry*; D014783:Viscosity
chemical_list: D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012834:Silver; C028044:epoxy resin AH-26; D014025:Titanium; D008709:Methenamine; D001729:Bismuth