title: Sealing ability of five different retrograde filling materials.
abstract: The sealing ability of Amalgam, Harvard-Cement, Diaket, gold-leaf, and Ketac-Endo as retrofilling materials was investigated. Paper cones were fixed with Harvard-Cement in the instrumented roots of 100 extracted human incisors. Apicectomy was performed and a 2-mm-deep retrograde cavity was prepared. Teeth were assigned to five groups (n = 20); each group received a different filling material. Surfaces of the roots were isolated with nail polish. Teeth, were stored in 1% methylene blue dye for 72 h. Roots were sectioned, and the depth of dye penetration was evaluated through a stereomicroscope. Retrofills with Ketac-Endo showed significantly less leakage compared with amalgam. There was no significant difference between the amalgam and Diaket groups. The sealing ability of Harvard-Cement and gold foil was lower than amalgam. It was concluded that retrograde fillings with Ketac-Endo or Diaket can be considered as alternatives for amalgam.
authors.affiliation: Clinic of Craniomaxillofacial Surgery, Johannes Gutenberg University, School of Dentistry, Mainz, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Gerhards
authors.forename: W
authors.initials: W
authors.lastname: Wagner
mesh_terms: D001729:Bismuth; D003723:Dental Amalgam; D003763:Dental Leakage / Q000175:diagnosis / Q000517:prevention & control; D004338:Drug Combinations; D005069:Evaluation Studies as Topic; D005899:Glass Ionomer Cements; D006801:Humans; D007180:Incisor; D008334:Mandible; D008437:Maxilla; D011145:Polyvinyls; D012184:Retrograde Obturation / Q000379:methods*; D012387:Root Canal Filling Materials; D018709:Statistics, Nonparametric; D015034:Zinc Oxide; D015036:Zinc Phosphate Cement
chemical_list: D004338:Drug Combinations; D005899:Glass Ionomer Cements; C074934:Ketac Endo; D011145:Polyvinyls; D012387:Root Canal Filling Materials; C014457:bismuth phosphate, copolymers of vinyl acetate, dichlorophen, propionyl-acetophenone, triethanolamine, vinyl chloride, vinylisobutyl ether, zinc oxide drug combination; D015036:Zinc Phosphate Cement; D003723:Dental Amalgam; C074226:Harvard Cement; D015034:Zinc Oxide; D001729:Bismuth