Changes in the Calcium and Phosphate Concentrations of Saliva and Inorganic Salt Solutions on Shaking with Calcium Phosphate

Abstract

In an attempt to explain the differences observed by Karshan (Jour. Dental Res. 15, 383, 1936; 18, 395, 1939), on shaking caries-free and caries-active saliva with tricalcium phosphate, it was observed that inorganic salt soln. (containing 8 mg. % Ca and 16 mg. % P), and salivas when treated in a similar manner, yield soln. at a low pH (4-5), in which both the Ca and phosphate concns. have increased, but at a higher pH (7-8), the soln. produced have a lower Ca and a higher P concn.. These changes in Ca and P concns. seem to be independent of each other, and not related to the Ca/P ratio of the solid used.