Oral Health Implications of Substance Use Disorders

Substance use disorders encompass dependencies on opioids, psychostimulants, alcohol and other illicit drugs, each exerting distinct yet overlapping effects on the oral cavity. Salivary hypofunction, triggered by the anticholinergic and sympathomimetic properties of many substances, undermines natural lubrication, antimicrobial activity and buffering capacity, creating an environment conducive to enamel demineralisation and microbial overgrowth. Concurrent bruxism and dietary habits high in refined sugars amplify tooth wear and caries risk, while immune modulation by chronic drug exposure may exacerbate periodontal breakdown. The resulting oral manifestations—ranging from rampant decay and gingival recession to mucosal lesions and candidiasis—have profound implications for nutrition, self-esteem and systemic inflammatory burden. Globally, individuals with substance use disorders face significant barriers to dental care, including stigma, treatment cost and limited interprofessional collaboration, which perpetuate unmet needs and health inequities. Integrating dental screening and preventive strategies into addiction treatment programmes can mitigate disease progression and support holistic recovery. Innovative approaches, such as chair-side salivary diagnostics and microbiome-guided therapies, hold promise for personalised risk assessment and early intervention. A clearer understanding of the pathophysiological mechanisms linking substance exposure to oral disease will inform tailored public-health policies and clinical guidelines aimed at reducing the oral health burden in this vulnerable population.

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Oral Health Implications of Substance Use Disorders publication trend

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Technical terms

Periodontal disease: Chronic inflammatory condition affecting the gums and supporting structures of teeth.
Oral microbiota: Community of microorganisms residing in the mouth.
Salivary flow rate: Volume of saliva produced per unit time, critical for lubrication and antimicrobial defence.
Dysbiosis: Disruption of the normal microbial balance leading to disease.
Decayed, missing and filled teeth (DMFT) index: Standardised measure of cumulative dental caries experience.
Bruxism: Involuntary grinding or clenching of the teeth, often exacerbated by stimulant use.

References

1. Can the salivary urea and stimulated saliva concentration be a marker of periodontal diseases in opioid users? A case-control study. Heliyon (2023).
2. The Effects of Drug Addiction and Detoxification on the Human Oral Microbiota. Microbiology Spectrum (2023).
3. Altered dental plaque microbiota correlated with salivary inflammation in female methamphetamine users. Frontiers in Immunology (2022).
4. Dental care for drug users in Norway: dental professionals’ attitudes to treatment and experiences with interprofessional collaboration. BMC Oral Health (2020).