I don't know about cavities. I don't remember ever having one.

Getting teeth pulled is awesome. I had my wisdom teeth pulled Mid-June last year and it was pretty neat. First they stabbed my gums with a giant needle to make them numb and then they went to work. I had four of them pulled and I fell asleep during the operation. Afterwards the dentist made sure to tell me that I was very close to being able to keep them all.