General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . esidue calco-globulin. The spheroidalbodies he named calco-globulin. As has already been shown, the mixed saliva contains a propor- -Kirk: American Textbook of Operative Dentistry, Philadelphia, Lea & S 383 tiou of calcium salts in solution, mos1 of which is calcium phos-phate; and consequently the main inorganic ingredienl of salivarydeposits is calcium phosphate. Unmixed parotid saliva depositscalcium carbonate on standing. Kir
General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . esidue calco-globulin. The spheroidalbodies he named calco-globulin. As has already been shown, the mixed saliva contains a propor- -Kirk: American Textbook of Operative Dentistry, Philadelphia, Lea & S 383 tiou of calcium salts in solution, mos1 of which is calcium phos-phate; and consequently the main inorganic ingredienl of salivarydeposits is calcium phosphate. Unmixed parotid saliva depositscalcium carbonate on standing. Kirk is of the opinion thai as aresult of putrefactive decomposition in the mouth, ammonia isformed, and thai the ammonia will precipitate calcium phosphateErom its acid solution as calcium ammonium phosphate, or, whenmagnesium phosphate is present in addition to calcium phos-phate, also as ammonium magnesium phosphate, a salt whichis found to lie one of the constituents of certain forms of form of deposit eaused by the chewing of the betel nut isof rapid formation and extremely destructive to the investingt Fig. 295.—Salivary calculi on the lingual surfaces of the roots of lower cuspids. Theproximity of these surfaces to the mouths of the ducts of the submaxillary and sub-lingual glands is the reason for their vulnerability to these deposits. In essence, the theory just outlined is one which assumes thatthe organic nucleus of the salivary deposits is furnished byprecipitated mucin, desquamated epithelial cells, food debris,bacteria, etc., as found in the mouth; and that the inorganic ma-terial is furnished by the saliva which, as it pours into the mouth,loses to a certain extent its holding power for a number of inor-ganic salts, particularly tricalcium phosphate (Ca3 (P04)2). Black, on the other hand, believed that calcareous depositsupon the surfaces of teeth, either salivary or subgingival, areformed by the deposition upon slightly roughened surfaces o
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