The greater the level of anxiety when visiting a dentist, the greater the need to take painkillers for the pain resulting from a tooth extraction. This link has been proven by Javier Fernández Aguilar, Mar Jovani and Isabel Guillén, researchers of the CEU Cardenal Herrera University (UCH CEU) of Valencia, along with María Teresa Sanz, from the University of Valencia (UV). In their study, which has just been published in Scientific Reports, has analyzed the levels of anxiety that the patient has before a tooth extraction, along with several physiological parameters, in order to establish their correlation with the greater need for subsequent pain relief treatment.