The oral effects of methamphetamine (meth) can be devestating. Caries that resemble early childhood caries are one effect, and it is often referred as the “meth mouth.” An often severe pattern of decay can be found on the buccal smooth surface of the tooth and the interproximal surfaces of the anterior teeth. The caries are usually caused by a combination of drug-induced phsycological and physiological changes resulting in dry mouth, long periods of time with bad oral hygiene, consumption of high carbonated beverages, tooth grinding, and tooth clenching.