Distribution and linear regression of preoperative Visual Analogue Scale for Anxiety (VAS‐A) and Dental Anxiety Scale (DAS) scores in 1114 patients submitted to implantology. A significant correlation between the tests is observed, but a large dispersion of data is present with a wide range of VAS‐A values for each DAS score.

Receiver operating characteristic (ROC) curve calculated for Visual Analogue Scale for Anxiety (VAS‐A) using the Dental Anxiety Scale (DAS) as the stated variable, where a DAS > 12 was selected as an indicator of dental anxiety (area under the curve [AUC]  =  0.805; P < .001). A VAS‐A cutoff value  =  5.1, corresponding to the best product of sensitivity (69.5%) and specificity (72.6%), has been chosen as a threshold for anxiety.

Distribution of preoperative Visual Analogue Scale for Anxiety (VAS‐A) and Dental Anxiety Scale (DAS) scores in 1114 patients submitted to implantology. Using DAS > 12 and VAS‐A > 5.0 as indicators of dental anxiety, the figure can be divided into the following four quadrants: (A) area of test discordance, where a low DAS is associated with a high VAS‐A; (B) area of anxiety, where both tests show a high score; (C) area of no anxiety, where both tests show a low score; and (D) area of inverse test discordance, where high DAS scores are associated with low VAS‐A values.

Receiver operating characteristic (ROC) curve calculated for Visual Analogue Scale for Anxiety (VAS‐A) using the Dental Anxiety Scale (DAS) as the stated variable, where a DAS > 15 was selected as an indicator of dental phobia (area under the curve [AUC]  =  0.833; P < .001). A VAS‐A cutoff value  =  7.0, corresponding to the best product of sensitivity (60.2%) and specificity (87.2%), has been chosen as a threshold for dental phobia.