Abstract
Urea, ammonium phosphide, sodium citrate and sodium phosphide were made into 5% solutions, and -after gargling with these, the patients were examined as to changes in the pH value of their saliva.
Of these four chemicals, sodium citrate was found to be the best with regard to pH rises and the duration of effect.
Sodium citrate is free from the danger of impairing the enamel of teeth.
When injected into the veins of rabbits, it hardly affect their carotid pressure.
On exposed rabbit intestines, it works stimulatively in a medium dose and restrictively in a large dose.
The effect of ammonium phosphide usually contained in tooth paste or powder has much stronger effect than sodium citrate on the carotid pressure of rabbits and the motion of their exposed intestines.
