Uncovering the Hidden: A Study on Incidental Findings on CBCT Scans Leading to External Referrals.

ABSTRACT

OBJECTIVES: This project aims to determine the prevalence of cone-beam computed tomography (CBCT) findings requiring referral. Additionally, the goal is to establish a reference standard protocol for incidental findings, outlining indications for further investigation and management protocol. METHODS: Patients records from the Advanced Imaging Centre at the School of Dentistry, University of Alberta, underwent systematic examination to identify CBCT incidental findings. Radiographic findings requiring referral were categorised into 8 anatomic zones. Analysis assessed prevalence and a management protocol was developed for significant findings. Inferential analyses were conducted to determine the frequency and prevalence of specific findings requiring further investigation. RESULTS: A total of 1260 CBCT interpretive reports were analysed. The most prevalent radiographic findings outside the areas of interest were found in the cervical vertebrae (18%), followed by the sinuses (15%), temporomandibular joints (8%), jaw lesions (7%), airway (5%), teeth (5%), soft tissue calcifications (5%), and other (1%). CONCLUSIONS: Findings most commonly requiring external referral included carotid atheroma (2.7%), cervical vertebrae osteoarthritis (0.97%), jaw lesions (0.86%), adenoid and/or tonsillar hypertrophy (0.86%), and paranasal sinus pathology (0.73%). Increased medicolegal awareness and practitioner knowledge contribute to the rising number of CBCT-identified radiographic findings outside the area of concern. The study addresses the debate on reporting all CBCT/radiographic findings by exploring their prevalence and providing protocols. These guidelines assist dentists in identification, decision-making, and referral processes.