I couldn't believe it, my New dentist on first checkup a few days ago, not only didn't figure that I smoke (a lot too) but said I have very good teeth, And I'd been getting all paranoid that they're were going bad, but she can sort it all out for me no problem and pretty cheaply (for decent dentistry anyhow)

So aslong as you take care of your teeth (which I havn't untill Recently I might add but don't push your luck, It'll catch up with you)
Then it should be fine, drymouth is bad for your teeth, one of the main reasons speed and meth addicts get bad teeth because the saliva protects them.