Yeah - oral surgery sucks for sure (and is costly)! It's not the actual surgery so much as the aftermath healing. At least now you will heal faster and it will be worth the $$ you put into it because you are no longer creating the problems that got you to this point so that's one good thing.
Another disease closely related to smoking that isn't in the forefront much is Buerger's disease:
"Virtually everyone diagnosed with Buerger's disease smokes cigarettes or uses other forms of tobacco, such as chewing tobacco. Quitting all forms of tobacco is the only way to stop Buerger's disease. For those who don't quit, amputation of all or part of a limb is sometimes necessary."