You may have higher levels of calcium in your saliva than normal. I know someone who has poor dental hygiene practices and never had a cavity, partly due to ex

You may have higher levels of calcium in your saliva than normal. I know someone who has poor dental hygiene practices and never had a cavity, partly due to excess calcium. Instead of cavities, he has problems with calcium deposits accumulating in his plaque. My point is, you may simply be an outlier rather a meaningful counter example.