Background: Idiopathic osteosclerosis (IO) is an area of enlarged bone production in the jaw that usually appears radiopaque and round, elliptical, or irregular in shape. Condensing osteitis (CO) is a focalized osseous reaction leading to periapical sclerotic bone growth. Objective: The aim of this study was to investigate the prevalence, localization, shape, and dental relationship of IO and CO in a group of Lebanese patients and to correlate these findings to age and gender. Methods: 520 digital panoramic radiographs of patients (215 men and 305 women) ranging in age from 18 to 77 (mean age 40.89 years) who visited the Faculty of Dental Medicine, Lebanese University, for dental treatment were included in this study and assessed for IO and CO. The prevalence of the two lesions according to gender and age, as well as their localization, and dental relationship, were recorded and saved in an Excel sheet. Results: Among the 520 radiographs, 47 (9%) showed IO, and 30 (5.8%) showed CO. Both lesions are more frequent among females in their third decade and are essentially found in the mandible, mainly in relation to the root apices. Conclusion: Within the limits of this study, we concluded that in our sample of the Lebanese population, the prevalence of IO and CO is low and supports the theory that IO can be defined as developmental variations of normal bony architecture unrelated to a local stimulant, and CO could be considered reactive bone formations related to pulpitis, deep restoration, or caries.
Key words: Prevalence; idiopathic osteosclerosis; condensing osteitis; digital panoramic radiograph; mandible; maxilla.
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