Can you tell me what number of cavities have you had your whole life?

Interesting: I'd guess the range you will find to this question will be 0 to more than a hundred, given that some fortunate people never experience tooth decay and others could get multiple cavities on each of the 52 teeth (20 baby and 32 adult) that we all get. You will also find significant variability depending on age, access to care, and geography. In public health the term dmf is often used for this.

Average Number: The good news is that as community water fluoridation increased the number of cavities in young people has decreased dramatically.