I’ve read that spirochetes (I assume a type of bacteria) that often are in the mouth, maybe they help with making cavities? Can’t remember what I read; also contribute to Alzheimers.
Last dentist I went to did a test for bacteria count in the mouth. He was astounded that I had none. Zero. He asked what I brushed my teeth with, answer: baking soda. He said it kills spirochetes in the mouth, maybe other bacteria as well. I alternate with home made tooth powder.
Bingo