Association between oral health-related quality of life and general health among dental patients: a cross-sectional study

Globally, the prevalence of chronic diseases is increasing significantly, causing deterioration of oral and general health and therefore quality of life. The present study was designed to assess the relationship between oral health-related quality of life and general health of dental patients. The study is part of the University’s plan to achieve the United Nations Sustainable Development Goals number 1, 3, 4 and 5. Dental school students’ satisfaction with their early engagement in clinical activities and research work was also evaluated. A convenience sample of 600 subjects attending dental clinics aged ≥18 years of both sexes was included in the study. Second-year dental students conducted the study under the supervision of public health staff members over two successive academic years (2015–2016 and 2016–2017). Oral health-related quality of life was assessed using the Dental Impact on Daily Living (DIDL) questionnaire. Blood pressure, random blood glucose level, body mass index, and waist circumference were measured as indicators of general health. There were statistically significant inverse correlations between DIDL scores and both mean blood pressure (r = −0.215, p < 0.001) and mean blood glucose level (r = −0.272, p < 0.001). Non-significant inverse correlations were observed between DIDL scores and both body mass index (r = −0.062, p = 0.131) and waist circumference (r = −0.040, p = 0.340). Students’ satisfaction scores with research activities were high, ranging from 75.9% to 78%. Dentists must raise patients’ awareness about the importance of oral health and its impact on their quality of life and general health. Participation of dental students in dental research is encouraged even in their early academic years.