Another reason people get fillings.
Dentistry is very competitive. It's almost as bad as car sales. A dentist on his own has to pay rent and financing on equipment. This means: 1) more fillings, 2) more braces and 3) more wisdom tooth extraction. A person with normal teeth has to be very careful going to the dentist otherwise he or she could end up spending a lot of money on unnecessary things so the Dentist's kids can go to college. This is not to say all dentists are that way, but there are plenty of ways to be scammed.