title: In vitro evaluation of an hydroxyapatite root canal system filling material.
abstract: An objective of endodontics is the three-dimensional filling of the root canal system, preventing leakage. The sealing ability of two hydroxyapatite formulations was compared with that of a gutta-percha/sealer combination placed with a vertical compaction technique. Zones of lysis tests of the hydroxyapatites showed no bacteriocidal effect of the formulations. Bacterial challenges of the sealing abilities of the formulations and gutta-percha/sealer combination showed that the formulations were not superior to the gutta-percha/sealer combination in their apical seal.
authors.affiliation: Department of Restorative Dentistry, University of California, San Francisco.
authors.forename: J M
authors.initials: JM
authors.lastname: White
authors.forename: H
authors.initials: H
authors.lastname: Goodis
mesh_terms: D001412:Bacillus subtilis / Q000187:drug effects; D001419:Bacteria / Q000187:drug effects; D015169:Colony Count, Microbial; D003763:Dental Leakage / Q000382:microbiology*; D004492:Edetic Acid; D004926:Escherichia coli / Q000187:drug effects; D006171:Gutta-Percha; D006801:Humans; D006882:Hydroxyapatites / Q000494:pharmacology; D008422:Materials Testing; D012387:Root Canal Filling Materials; D016369:Smear Layer; D013291:Streptococcus / Q000187:drug effects
chemical_list: D006882:Hydroxyapatites; D012387:Root Canal Filling Materials; D006171:Gutta-Percha; D004492:Edetic Acid