Aim: To evaluate the accuracy of cone-beam computed tomography versusphotostimulated phosphor plate in detection of dental root fractures.Methods: Sixty-six extracted human mandibular (28 anterior and 38 posterior) teethwere included in this study. Teeth were divided into two groups: First group (33 teeth):The control group (non-fractured teeth) and the second group (33 teeth): The inducedfracture group. The second group was divided into 3 equal subgroups each of which had11 teeth with induced horizontal, vertical and oblique root fractures respectively. Afterinduction of RFs, The fractured and non-fractured teeth were coded by numbers from 1to 66 using black pen and then all the teeth were recorded according to the presence orabsence of fracture and the type of the fracture. Inlay wax was then added around theroots of all teeth within the sockets of the dry human mandibles. All teeth were thenradiographed using two techniques: Digital radiographs were taken using DigoraOptime )Soredex, Tuusula, Finland) size 2 PSP plate and a standard dental x-ray unitand CBCT images were taken using Planmeca CBCT unit.Results: The sensitivity of the CBCT regarding the detection of fracture lines (75.27%)was greater than that for the PSP plate (68.81%). The specificity of the CBCT (91.39%)was greater than that for the PSP plate (specificity =73.11%).Conclusion: CBCT images have higher sensitivity and specificity in detecting thedifferent types of RFs vertical, horizontal or oblique root fractures compared to PSPplate. CBCT are more accurate than PSP plate in detection of vertical, horizontal andoblique root fractures.