Cone Beam Computed Tomographic with Conventional Type of Inspection and Comparison of Resorption (External): Observation Study

Aim: To determine whether there is difference in radiographic signs of external cervical resorption (ECR) by using two devices. Methodology: This study included twenty ECR lesions on routine radiographs collected from diagnostic department data of College of Dentistry / Hawler Medical University. The radiographic clues (periapical [PA] and then cone beam computed tomography [CBCT]) had been recorded and later assessed. Statistical analysis was done on specific evaluation form to determine if there were differences in the presentation between the two devices to this condition (ECR) by specific parameters. Results: Single defects were detected in 90% of samples (18 in no.) in radiographs while multiple defects were detected in 50% of cases (10 in no.) by CBCT; however, only 10% of samples were detected with multiple defects by radiographs (2 in no.). Patel 2A was the most frequently detected type of ECR (50% of cases), and 3B was reported the least frequent (5%); destructive was higher than reparative type in percentage (80%). Conclusion: When the ECR was evaluated by CBCT, most lesions were sub crestal relation in height and extended circumferentially.