Oral health-related quality of life among Brazilian adults with mental disorders

The aim of this study was to investigate associations of sociodemographic, lifestyle, medical conditions, and caries experience with oral health-related quality of life (OHRQoL) in a large sample of adults with mental disorders. A sample of 753 adults diagnosed with schizophrenia or depression, who were users of 10 public mental health outpatient clinics located in the city of Sao Paulo, Brazil, participated in the study. Participants provided data on sociodemographic characteristics, psychiatric diagnosis, medication use, and health behaviors. Oral examinations to evaluate dental caries (using the decayed, missing, and filled teeth ([DMFT] index) and dental plaque (using the Silness-Loe plaque index) were conducted. Oral health-related quality of life was evaluated using the 14-item Oral Health Impact Profile (OHIP-14) questionnaire. Log-Poisson regression was used to evaluate associations between the outcome and independent variables. The prevalence of one or more OHIP-14 impacts occurring fairly often/often was 72.3%. Physical pain was the OHIP domain with the highest prevalence, followed by psychological discomfort. Multivariable analysis showed that higher prevalence of the reponses 'fairly often/often' in the OHIP-14 was associated with being female, aged 35 to 54 years, having a low family income, a diagnosis of depression, a smoking habit, and fewer than 20 teeth. Adults with mental disorders had a high prevalence of impacts on their OHRQoL, which were associated with caries experience, sociodemographic characteristics, type of psychiatric diagnosis, and behavioral risk indicators.