Review of the effects of cannabis smoking on oral health.

Cannabis is a drug which is abused worldwide, and so presents a social and health problem for many countries. There are several cannabis-associated oral effects of importance to the dental practitioner which are reviewed in this article. These include xerostomia (with predisposition to caries and periodontitis), severe gingivitis, oral mucosal disease, and an abnormal stress response upon administration of adrenalin-containing local anaesthetic.