When you mix up a dose of Miracle-Mineral-Supplement according to the Miracle-Mineral-Supplement protocol, you end up with chlorous acid that has a PH of about 3. Depending upon the dilution you use, this acid can have a detrimental effect on your teeth.
Mix up a solution of baking soda and water and after using your Miracle-Mineral-Supplement , swish with the baking soda solution. This should neutralize the acid.