The purpose of this study was to evaluate the dental anxiety expressed among patients undergoing endodontic treatment with respect to some social and dental parameters. The dental records of 98 patients, 42 men and 56 women who were referred for root canal treatment to an endodontist, were examined. Patients completed a Dental Anxiety Scale (DAS). Dental experience, time of last visit to the dentist, and symptoms of tooth were recorded. The mean DAS scores were higher than scores reported in other countries (9.4 ± 3.3). Women demonstrated higher dental anxiety than men. Patients with higher education demonstrated lower dental anxiety. No difference was found between patients experienced in endodontic treatment and those who were not, patients who suffered previous pain in the treated tooth and patients who did not. Women in their mid-thirties to mid-forties and men in their twenties expressed the highest DAS scores.