http://www.duluthsuperior.com/mld/duluthsuperior/news/local/10603139.htm
"Look into the mouth of a longtime meth user, and you'll see one way the drug marks its users.
You'll see teeth ground to mere nubs, others black with rot, abscessed gums and other dental nightmares.
That's what Minnesota prison dentist Stephen Boesch sees with increasing frequency in the mouths of inmates.
With a more than fivefold increase in the number of methamphetamine offenders behind bars, the drug's effect on teeth is taking its toll on the state prison budget's bottom line."