An anecdote fwiw: I rarely brushed my teeth as a child, and had numerous cavities. But for some reason, they only occurred on my baby teeth, not my adult teeth

An anecdote fwiw: I rarely brushed my teeth as a child, and had numerous cavities. But for some reason, they only occurred on my baby teeth, not my adult teeth. My brushing habits atrophied further and by the time I was 18, not only was I not brushing at all, but I never went to the dentist again, except for once in my mid-30s. The dentist admonished me over lack of brushing and the plaque buildup on my teeth, but there were still no cavities or irregularities. I've not been to a dentist in the 10 years since then, and on the very rare occasions (once a week or two weeks) where I do brush, I don't use tooth paste (kept forgetting to buy some). I keep waiting for the hammer to drop, but so far lucky.