Understanding the relationship between oral health and psychosis: qualitative analysis

Individuals with psychosis have poor oral health compared with the general population. The interaction between oral health and psychosis is likely to be complex and have important ramifications for improving dental and mental health outcomes. However, this relationship is poorly understood and rarely studied using qualitative methods.

To explore patient perspectives on the relationship between oral health and psychosis.

The authors recruited 19 people with experiences of psychosis from community mental health teams, early intervention in psychosis services, and rehabilitation units. Participants completed a qualitative interview. Transcripts were analysed with reflexive thematic analysis.

The analysis resulted in three themes: theme 1, psychosis creates barriers to good oral health, including a detachment from reality, the threat of unusual experiences and increased use of substances; theme 2, the effects of poor oral health in psychosis, with ramifications for self-identify and social relationships; and theme 3, systems for psychosis influence oral health, with central roles for formal and informal support networks.

Psychosis was perceived to affect adherence to oral health self-care behaviours and overall oral health. Poor oral health negatively affected self-identity and social relationships. Clinical implications include a systemic approach to provide early intervention and prevention of the sequelae of dental disease, which lead to tooth loss and impaired oral function and aesthetics, which in turn affect mental health. Participants felt that mental health services play an important role in supporting people with oral health.