Abstract: Objective: To explore the cone-beam computed tomography (CBCT) imaging characteristics of florid cemento-osseous dysplasias (FLCOD). Methods: Clinical and CBCT data from patients diagnosed with FLCOD were collected, and the imaging characteristics of the patients were analyzed. Results: Among the 37 patients with FLCOD, the incidence rate was high in women over 30 years old, accounting for approximately 94.6%. In the 37 cases of FLCOD, 125 quadrants were involved, including 394 teeth with 25 missing teeth. The lesions predominantly occurred in the mandibular posterior region, accounting for about 44.2%.The density of the lesions within the jawbone was mainly high density and mixed density. There was a low-density shadows around the FLCOD lesions. In the maxillary posterior tooth area, low-density shadows were partially present in 36 cases (31.9%) of the lesions. The cortical bone in the lesion area may become thin, perforated, and the jaw bone may become swollen, with the highest probability of thinning in the anterior mandibular lesion area, about 60 cases (76.9%). Important anatomical structures within the jawbone, such as the maxillary sinus and the mandibular nerve canal, may also be involved in this disease. The affected teeth may exhibit imaging manifestations such as root resorption, cementum hyperplasia, and blurred periodontal membrane images. Conclusion: FLCOD is a rare, extensive bone metabolism abnormality occurring within the jawbone, with a high incidence rate in middle-aged women, predominantly in the mandibular posterior region. CBCT can accurately reflect the density of the lesion area and minute structural changes, which can enhance the oral physician's understanding of FLCOD and reduce the misdiagnosis rate.

Key words: cemento-osseous dysplasia, florid cemento-osseous dysplasia, cone-beam computed tomography, imaging characteristics