Gender-specific associations between the dimensions of alexithymia personality trait and dental anxiety in parents of the FinnBrain Birth Cohort Study

We evaluated gender-specific associations of two dimensions of dental anxiety (anticipatory and treatment-related dental anxiety) with three dimensions of alexithymia: difficulty in identifying feelings, difficulty in describing feelings, and externally oriented thinking. The sample comprised 2558 parents from the general population participating in the FinnBrain Birth Cohort Study. Dental anxiety was measured with the Modified Dental Anxiety Scale and alexithymia with the 20-item Toronto Alexithymia Scale. Associations between dental anxiety and alexithymia dimensions were modelled using linear regression analysis adjusting for general anxiety and depressive symptoms, age, and education. Structural equation modeling assessed their interrelationships. In women, anticipatory dental anxiety was associated only with difficulty in identifying feelings, but treatment-related dental anxiety was associated with difficulty in identifying feelings, difficulty in describing feelings, and externally oriented thinking. In men, anticipatory dental anxiety was associated with only externally oriented thinking, whereas treatment-related dental anxiety was associated with difficulty in describing feelings, and with externally oriented thinking. Structural equation modelling showed that difficulty in identifying feelings was associated with anticipatory and treatment-related dental anxiety in women, whereas in men, only difficulty in describing feelings was associated with both types of dental anxiety. Anticipatory and treatment-related dental anxiety have different associations with alexithymia dimensions.