title: Apical leakage after root canal filling with an experimental calcium hydroxide gutta-percha point.
abstract: This study was an in vitro analysis of the apical seal of root canals filled with an experimental calcium hydroxide gutta-percha point. One hundred and ten recently extracted human permanent teeth with a single root were used. The root canals were biomechanically prepared, and some received a dressing of calcium hydroxide for 7 days. Root canals not dressed were filled by the lateral condensation technique with either regular gutta-percha or calcium hydroxide gutta-percha points. The dressed root canals were filled with the same sealers and regular gutta-percha points. The specimens were placed into a 2% methylene blue dye solution under vacuum, and the apical leakage was linearly evaluated. The experimental groups with calcium hydroxide dressing and the one with calcium hydroxide gutta-percha points exhibited significantly (p < 0.05) less leakage than the groups filled with regular gutta-percha points. The results obtained indicated that calcium hydroxide gutta-percha points produced an improvement in the apical sealing quality of the root canal filling.
authors.affiliation: Department of Endodontics, Faculty of Dentistry of Araçatuba, UNESP, Brazil.
authors.forename: R
authors.initials: R
authors.lastname: Holland
authors.forename: S S
authors.initials: SS
authors.lastname: Murata
authors.forename: E
authors.initials: E
authors.lastname: Dezan
authors.forename: O
authors.initials: O
authors.lastname: Garlipp
mesh_terms: D000704:Analysis of Variance; D002126:Calcium Hydroxide; D003763:Dental Leakage; D006171:Gutta-Percha; D006801:Humans; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D012389:Root Canal Obturation / Q000379:methods*; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D015035:Zinc Oxide-Eugenol Cement; C045432:Grossman's sealer; D006171:Gutta-Percha; D002126:Calcium Hydroxide