Dentist question?

Have you guys ever heard about the dentist breing able to tell youve been smoking. If so, explain.

yeah they can tell you smoke but i dont know much about it, also i dont think they can tell if its weed or cigs, just that u smoke in genergal

yeah my teeth have gone slightly downhill since I started smoking a few years ago, but I honestly haven't been to the dentist since. But I think I have an appointment pretty soon.. Eeek, I hate that place.

I love novocain though!