According many publications, rate and severity of various diseases of oral cavity are significantly increasing in drug-dependent patients. One of drugs using in many countries as a substitution therapy is methadone. However, last research data testifies that negative effect of methadone on human organism in general is more expressed as compared with case of heroin. So, significance is acquired by those studies that testify pathological alterations in organs and systems of patients, including effect on oral cavity. The article presents the results of analysis if crystallography of biological fluids of drug-dependent patients using heroin and methadone. Te study established dependence of character of growth of crystals from type of used drug.
Keywords: crystallography; drug-dependence; heroin; methadone; stomatological status.