Understanding oral Health-Related quality of life in adults with serious mental illness: A scoping review.

People with serious mental illness (SMI) experience substantial oral health inequalities that may adversely affect oral health-related quality of life (OHRQoL). This scoping review mapped evidence on OHRQoL among adults with SMI and related psychiatric populations, examined associated factors, and identified evidence gaps. Following Arksey and O'Malley's framework and PRISMA-ScR, six electronic databases were searched for peer-reviewed primary studies published from January 2000 through April 2026. Evidence was classified as: (1) SMI populations; (2) other clinically diagnosed psychiatric popu