The #1 Weird Way to Remineralize Teeth and Heal Cavities
“Take eggshells and put them in boiling water for about 5 minutes. The boiling will kill any pathogens. Then, air dry the shells and grind the shells in a coffee grinder. Take a 1/2 teaspoon a day. It is important to note that Vitamin D [via exposure to sunlight] greatly aids calcium absorption.” 
Homemade eggshell toothpaste can also be made by consulting this recipe. By using both the tonic and the toothpaste together, the odds will be significantly put in the favor of sufficiently remineralizing your teeth so that dental visits can be minimized.
Eggshell toothpaste recipe:
- ¼ cup ground up eggshells or calcium magnesium tablets
- About 2-3 Tbs. coconut oil
- 1 Tbs. baking soda
via naturalsociety The #1 Weird Way to Remineralize Teeth and Heal Cavities