My mom has terrible teeth, my dad has fabulous teeth. I had horrible baby teeth (multiple fillings, 14 teeth pulled (8 permanent, counting wisdom teeth, an abscess, braces x 2, retainers, headgear, you name it except for gum problems). I'm 28 now and in the last 15 years have had one filling. Knock on wood, the adult teeth seem to be better than the baby teeth so far despite my tremendous dislike of the dentist and only going every 2-3 years.