Meth mouth is the tooth decay and poor dental health that typically occur when someone is addicted to meth. Meth mouth has been regarded a “dentist’s worst nightmare” and is the result of a combination of acidic tooth decay and drug-induced physical changes that occur with meth use. Meth mouth is often one of the most apparent physical changes that occur when someone abuses meth, alongside changing facial features and skin damage from shooting meth. After just a few sessions of smoking meth, a user’s teeth will begin to stain a dark yellow. As a meth addiction develops, this discoloration will worsen, and eventually the protective enamel of the teeth will begin to flake or chip away. Once the enamel is gone, teeth are left vulnerable to acidic chemical traces in the clouds of meth smoke that users inhale, and it is these acidic traces that ultimately do most of the damage. Soon, teeth that were previously stained yellow will begin to turn brown and black. Saliva gland function will be compromised by the presence of meth’s toxic byproducts, reducing their capacity to produce moisture that helps cleanse teeth and protect them from decay. The development of meth mouth eventually reaches a point of no return. Corroded and desecrated beyond repair, the teeth will decay all the way to the gum line, leaving useless deformed stumps where there used to be healthy, normal white teeth. Gum disease is another result of meth addiction, and with gums no longer healthy enough to support teeth, some will break or fall out. Teeth, of course, don’t grow back, and they can’t be restored once meth mouth progresses too far.