(PO21) Frequency of Secondary Findings on CBCT Radiographs and Influence of Risk Factors

Abstract: Cone beam computed technology (CBCT) usage is increasing annually throughout the field of dentistry. CBCT volumes often give rise to findings that are secondary to the reason the volume was obtained. The aim of this research was to assess the presence of secondary findings on CBCT radiographs and determine the extent to which selected risk factors are associated with finding frequency. Resident dentists analyzed radiology reports generated by certified dental radiologists on CBCT volumes at the UNMC College of Dentistry. Secondary findings were charted, and background information was collected on the patient and CBCT order. A total of 953 reports met the criteria and were analyzed. Of these, 517 reported secondary findings (54%). A total of 968 secondary findings were reported with a mean of 1.8 findings per CBCT. There were 282 reports with 1 finding, 121 with 2 findings, 58 with 3 findings, 30 with 4 findings, and 26 with 5 or more findings. While the size of the field of view was significantly associated with the number of secondary findings, no correlation was found between the reason the CBCT was obtained, the sex, or the age of the patient. Regarding the location, 49.6% of findings were located in the dentition, 25% in the sinus, and 18.5% in the bone.As CBCT usage increases, it is essential that CBCT volumes be read in full.