The burden of disease of dental anxiety: generic and disease‐specific quality of life in patients with and without extreme levels of dental anxiety

The aim of this study was to compare disease‐specific (oral health‐related) quality of life (OHRQoL), assessed using the Oral Health Impact Profile‐14 (OHIP‐14), and generic (health‐related) quality of life (HRQoL), assessed using the EuroQol5D (EQ‐5D‐5L), in patients with severe dental anxiety (who were visiting a centre for special care dentistry) with a control group from the general population. Seventy‐six patients with severe dental anxiety [Dental Anxiety Scale (DAS) score ≥ 13] were matched, according to age, gender, and socio‐economic status, to a control group of 76 participants in a larger epidemiological study on oral health in the Netherlands (n = 1,125). The Wilcoxon signed‐rank test was used to compare levels of HRQoL and OHRQoL in both groups. The total OHIP score (indicating lower OHRQoL) was higher for the patient group (10th percentile = 30.5; 90th percentile = 46.0) than for the control group (10th percentile = 1.0; 90th percentile = 14.5). The patient group showed higher scores on all seven OHIP domains. Lower utility scores were found in patients with severe dental anxiety (HRQOL: 10th percentile = 0.7; 90th percentile = 0.9) relative to the control group (HRQOL: 10th percentile = 0.9; 90th percentile = 1.0). A disease burden of 74,000 disability‐adjusted life years (DALYs) was calculated for the Netherlands. The findings of this study show differences between patients visiting a dental fear clinic and matched controls from the general population for both OHRQoL and HRQoL, indicating that having severe dental anxiety generates a significant burden of disease.