Author(s)

Jeremiah Moshy, Elizabeth Dimba, Tom Ocholla, Mark Chindia

Department of Oral and Maxillofacial Surgery—Oral Pathology and Oral Medicine, University of Nairobi, Nairobi, Kenya.
Department of Oral Surgery/Oral Pathology, College of Health Sciences, Muhimbili University, Dar es Salaam, Tanzania.

Objective: To characterize the diagnostic features of ossifying fibroma (OF) and fibrous dysplasia (FD) of the jaw bones. Study Design: A histopathological and radiological analysis with full clinical documentation. Setting: University of Nairobi Dental Teaching Hospital (UNDH). Study Population: All archival cases diagnosed as FD and OF from 1992-2006 were retrieved from the UNDH Oral Pathology Laboratory records. New cases were included as they pre-sented over a 6-month period from January to June 2007. Methodology: Information regarding the histological type of a fibro-osseous lesion (FOL) including the clinical features, demographic and radiographic data was documented for analysis; and comparison between pathological parameters and the final diagnosis was evaluated with the chi-square test. Results: FD lesions constituted 40 (27.2%) cases while 107 (72.8%) were OF. The age ranged from 1 - 72 years (mean = 24.19 ± SD 13 years). The differences in the gender distribution were not statistically significant. Radiographic analyses showed statistically significant differences between the appearances of the body (p = 0.012) and the margins (p = 0.003) of FD and OF. The microscopic differences between the two lesions were not statistically significant. Conclusion: Differentiation between FD and OF is only possible after critically analyzing the clinical, radiological and histological criteria.

Diagnostic; Ossifying-Fibroma; Fibrous Dysplasia; Jaws

J. Moshy, E. Dimba, T. Ocholla and M. Chindia, "Characteristic Radiological and Histological Patterns of Fibrous Dysplasia and Ossifying Fibroma of the Jaws at University of Nairobi Dental Teaching Hospital," Surgical Science, Vol. 3 No. 4, 2012, pp. 189-193. doi: 10.4236/ss.2012.34036.