Methamphetamine users and addicts may lose their teeth abnormally quickly, a condition known as “meth mouth”. This effect is not caused by any corrosive effects of the drug itself, which is a common myth.
According to the American Dental Association, meth mouth “is probably caused by a combination of drug-induced psychological and physiological changes resulting in xerostomia (dry mouth), extended periods of poor oral hygiene, frequent consumption of high-calorie, carbonated beverages and bruxism (teeth grinding and clenching).”
Similar, though far less severe symptoms, have been reported in clinical use of regular amphetamine, where effects are not exacerbated by extended periods of poor oral hygiene
