title: Leakage of five root canal sealers.
abstract: OBJECTIVE
  The aim of this study was to examine the apical sealing ability of five root canal sealers using a fluid transport model.
  
  
  METHODS
  A comparison of root canal scalers AH26, AH Plus, Diaket, Apexit, and Ketac-Endo were tested on 60 single-rooted teeth. The coronal part of each tooth was removed at the amelo-cemento junction, and also 3 mm of the root tip. Root canals were instrumented using the 'step-back' technique with Gates Glidden drills and irrigated with 2.5% NaOCl. The specimens were divided into five groups of 10 samples each and filled with test materials and gutta-percha points by the cold lateral condensation technique. Ten teeth were used as a control group, out of which five served as negative and five as positive controls. The leakage was measured by the movement of an air bubble in a capillary glass tube connected to the experimental root section.
  
  
  RESULTS
  The differences in leakage amongst Ketac-Endo (0.318 microL: SD 0.084), AH26 (0.319 microL; SD 0.075), AH Plus (0.330L; SD 0.085) Apexit (0.360 microL; SD 0.127) and Diaket (0.387 microL; SD 0.140) were not statistically significant (P > 0.05).
  
  
  CONCLUSIONS
  Under the conditions of this study, all five sealers produced a satisfactory seal.
authors.affiliation: Department of Dental Pathology, School of Dentistry, University of Zagreb, Croatia.
authors.forename: I
authors.initials: I
authors.lastname: Miletić
authors.forename: I
authors.initials: I
authors.lastname: Anić
authors.forename: S
authors.initials: S
authors.lastname: Pezelj-Ribarić
authors.forename: S
authors.initials: S
authors.lastname: Jukić
mesh_terms: D001729:Bismuth; D002126:Calcium Hydroxide; D003481:Cuspid; D003763:Dental Leakage; D004338:Drug Combinations; D004853:Epoxy Resins; D005069:Evaluation Studies as Topic; D005899:Glass Ionomer Cements; D006801:Humans; D007180:Incisor; D008709:Methenamine; D011145:Polyvinyls; D012387:Root Canal Filling Materials; D012834:Silver; D014025:Titanium; D015034:Zinc Oxide
chemical_list: C074418:Apexit; D004338:Drug Combinations; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; C074934:Ketac Endo; D011145:Polyvinyls; D012387:Root Canal Filling Materials; C534916:epoxy resin-based root canal sealer; D012834:Silver; C028044:epoxy resin AH-26; C014457:bismuth phosphate, copolymers of vinyl acetate, dichlorophen, propionyl-acetophenone, triethanolamine, vinyl chloride, vinylisobutyl ether, zinc oxide drug combination; D014025:Titanium; D008709:Methenamine; D002126:Calcium Hydroxide; D015034:Zinc Oxide; D001729:Bismuth