Quack dentists everywhere make tons of money filling little decay spots resulting from bacterially-caused demineralization. People could just as easily be educated in prevention (no, brushing has NOTHING to do with it) and never need any drillings / fillings, but repair and maintain their teeth the way nature intended.
I'm anxiously waiting for more of my fillings to pop out.
See, the teeth are one point at which very high levels of biophoton energy are present. That light provides the template and guiding energy for the re-crystallization / repair. The spots will fill perfectly, you will amaze yourself.