title: [An electron paramagnetic resonance study of 4 salivary calculi treated in an ionized oxygen atmosphere].
abstract: Four salivary calculi and synthetically prepared hydroxyapatite, tricalcium phosphate and B-type carbonated fluorapatite or hydroxyapatite were treated under excited oxygen atmosphere. All these samples were studied by Electron Spin Resonance at 100 K. The presence of paramagnetic ozonide ions was observed only in the salivary calculi and in the hydroxyapatite. This indicates that the dominant apatite phase in salivary calculi is weakly carbonated hydroxyapatite.
authors.affiliation: Service de Biologie, Faculté de Chirurgie Dentaire, Toulouse.
authors.forename: J
authors.initials: J
authors.lastname: Faure
authors.forename: M
authors.initials: M
authors.lastname: Vignoles
authors.forename: G
authors.initials: G
authors.lastname: Bacquet
mesh_terms: D001031:Apatites / Q000032:analysis; D002130:Calcium Phosphates / Q000032:analysis; D017886:Durapatite; D004578:Electron Spin Resonance Spectroscopy; D006801:Humans; D006882:Hydroxyapatites / Q000032:analysis; D010100:Oxygen; D012465:Salivary Duct Calculi / Q000032:analysis*; D013057:Spectrum Analysis
chemical_list: D001031:Apatites; D002130:Calcium Phosphates; D006882:Hydroxyapatites; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C485838:calcium phosphate, monobasic, anhydrous; D017886:Durapatite; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous; C025105:fluorapatite; D010100:Oxygen
vernacular_title: Etude, par résonance paramagnétique électronique, de quatre calculs salivaires traités en atmosphère d'oxygène excité.