How could i tell if i have meth mouth?

Rampant decay: Well for starters you need to be a meth user. Meth mouth is characterized by rampant caries or decay along the gum line and to the point where there is nothing left above the gum on some of the teeth. The chewing surfaces of molars may also be eroded away severely and cupped or hollowed out. Severe cases require removal of teeth and dentures.