title: The crystalline components of dental calculus in the domestic cat.
abstract: Feline dental calculus was found to consist of carbonate-containing hydroxyapatite, Ca10(PO4)3(CO3)3(OH)2. Other forms of calcium phosphates consistently present in human calculus, and calcium carbonates found in horse, dog, and miniature pig calculus were not present. Calculus composition was performed using wet chemical method, x-ray diffraction, spectrographic analysis, and infrared spectrophotometric analysis. All samples showed traces of amorphous material, including magnesium and ammonium, but were negative for uric acid, cysteine, and oxalate.
authors.affiliation: Sydney University Veterinary Teaching Hospital, NSW, Australia.
authors.forename: D E
authors.initials: DE
authors.lastname: Clarke
mesh_terms: D000818:Animals; D002118:Calcium / Q000032:analysis; D002119:Calcium Carbonate / Q000032:analysis; D002130:Calcium Phosphates / Q000032:analysis; D002254:Carbonates / Q000032:analysis; D002415:Cats; D003545:Cysteine / Q000032:analysis; D003728:Dental Calculus / Q000737:chemistry* / Q000662:veterinary*; D004285:Dogs; D017886:Durapatite / Q000032:analysis*; D005453:Fluorescence; D006736:Horses; D006801:Humans; D010070:Oxalates / Q000032:analysis; D010710:Phosphates / Q000032:analysis; D000644:Quaternary Ammonium Compounds / Q000032:analysis; D013055:Spectrophotometry, Infrared; D013552:Swine; D013556:Swine, Miniature; D014527:Uric Acid / Q000032:analysis; D014961:X-Ray Diffraction
chemical_list: D002130:Calcium Phosphates; D002254:Carbonates; D010070:Oxalates; D010710:Phosphates; D000644:Quaternary Ammonium Compounds; D014527:Uric Acid; D017886:Durapatite; D002119:Calcium Carbonate; D003545:Cysteine; D002118:Calcium