Calcium carbonate ( a type of limestone rock), zeolites, and sodium bicarbonate (baking soda) with clay. If you used a fluoride gel, then you used sand and feldspar.

The calcium carbonate and sand act as an abrasive. The sodium bicarbonate acts as a cleansing agent.

Grind up some antacids like TUMS into a powder. Place 1/2 teaspoon of the calcium carbonate into the plastic cup. Add 1/4 teaspoon baking soda to the cup. Add a drop or two of water to make a paste. Stir.

Now, go brush your teeth!

The source of this article was taken from Wherever You Are On Earth. . .You're On Rock! by WHAM, the minerals information company. If you would like additional educational information and materials, stop by at www.aggman.com