en The Impact of Educational videos Intervention on Dental Anxiety and Dental fear in Patients Undergoing Root canal treatment Dentistry پژوهشي Research <h3>Background: The purpose of this study was to investigate the effect of educational videos on reducing anxiety and fear in adult patients undergoing root canal therapy in private dental.</h3> <h3>Materials and Methods: The research method was a quasi-experimental and pretest-posttest with a control group. The statistical population consisted of all patients referring to tooth dentists in private dental clinics of Shiraz during the summer of 1396. A sample of 50 people was selected through the convenience sampling method and randomly assigned into two experimental and control groups. Both groups responded to two anxiety and fear questionnaires. Then the experimental group participated in the training sessions and the control group did not attend this training period. Again, both questionnaires were administered to the two groups. The data obtained from completing the questionnaires were analyzed using a one-way analysis of covariance.</h3> <h3>Results: The results of covariance analysis showed that there was a significant difference between the mean scores of the groups in the anxiety so that the mean of anxiety scores in the post-test in the experimental group was significantly lower than the control group. Also, there was a significant difference between the mean scores of the groups in the fear and its component (Avoiding dental treatment, Physical symptoms caused by anxiety and anxiety caused by dental stimuli), so that the mean of fear scores and its component in the post-test in the experimental group was significantly lower than the control group.</h3> <h3>Conclusions: Based on the findings of this study, it can be concluded that educational videos play an important role in the reduction of anxiety and fear in the treatment of tooth decay in adult patients<span dir="RTL">.</span></h3> &nbsp; <h3>Background and objectives: Dental anxiety refers to the fear associated with the idea of seeking dental care. It is the fifth most common cause of anxiety. The purpose of this study was to investigate efficiency of educational videos for reducing anxiety and fear in adult patients undergoing root canal treatment in private dental clinics.</h3> <strong>Methods:</strong> This was a quasi-experimental study with a pretest-posttest design. The statistical population consisted of all patients referred to private dental clinics in Shiraz (Iran) during the summer of 2016. Overall, 50 subjects were selected via the convenience sampling method. The subjects were randomly divided into an intervention group (n=25) and a control group (n=25). Both groups responded to two anxiety and fear questionnaires. Then, the intervention group participated in a video training session, while the control group did not receive any training. Subjects in both study groups once again completed the questionnaires. Data were analyzed in the SPSS (version 22) using one-way analysis of covariance and at statistical significance of 0.05. <h3>Results: After the intervention, the mean scores of fear and its components (avoiding dental treatment, physical symptoms caused by anxiety, and anxiety caused by dental stimuli) were significantly lower in the intervention group than in the control group (P<0.05).</h3> <strong>Conclusion: </strong>Based on the findings, it can be concluded that the educational video on root canal treatment could help reduce anxiety and fear in adult patients<span dir="RTL">.</span> <h3></h3> Educational video, Anxiety, Fear, Root canal Educational video, Anxiety, Fear, Root canal treatment 45 51 http://jcbr.goums.ac.ir/browse.php?a_code=A-10-223-1&slc_lang=en&sid=1 mina shafa khah مینا شفاخواه saramhasti@yahoo.com 10031947532846003549 10031947532846003549 Yes Department of Psychology, Shiraz Branch, Islamic Azad University, Shiraz, Iran Sareh Behzadi 10031947532846003550 10031947532846003550 No Department of Psychology, Shiraz Branch, Islamic Azad University, Shiraz, Iran