Author(s)

Cyrus S. Micha, Mark L. Chindia, David O. Awange, Elizabeth Dimba, Tom M. Osundwa, Josiah G. Otwoma

Department of Oral & Maxillofacial Surgery and Oral medicine, Oral Pathology School of Dental Sciences, University of Nairobi, Kenya.

Background: Jaw cysts and cyst-like lesions cause facial deformity, destruction of dental tissues and affect masticatory and phonation functions. These ad-versely erode patients’ psycho-social status; create low self-esteem and may change one’s facial identity and appearance. Objective: To determine the histo-pathologic characteristics, variants and demographic pattern of jaw cysts and cyst-like lesions at the University of Nairobi Dental Hospital. Material and Me-thod: This was an analytical and verification study that involved microscopic re-examination of all available incisional/excisional biopsy samples from January 2000 to December 2009 for histo-pathological diagnosis at the University of Nairobi Dental Hospital. Results: 187 jaw cysts and cyst-like lesions were diagnosed at the University of Nairobi Dental Hospital over the ten-year period. Keratocystic odontogenic tumours constituted 28%, dentigerous cysts 25%, nasopalatine duct cysts 19%, radicular cysts 15%, while calcifying odontogenic cysts comprised 4% of all the lesions. The rest of the lesions were between 1% and 3% of all the lesion entities. Conclusion: Keratocystic odontogenic tumours and dentigerous cysts were the most common developmental odontogenic cysts diagnosed in the ten-year period.

Jaw Cysts; Odontogenic Cyst; Non-Odontogenic Cysts; Dentigerous Cyst and Cyst-Like Lesions

Micha, C. , Chindia, M. , Awange, D. , Dimba, E. , Osundwa, T. and Otwoma, J. (2012) Pattern of occurrence of jaw cysts and cyst-like lesions at the University of Nairobi Dental Hospital: A 10-year histopathologic audit. Open Journal of Stomatology, 2, 140-145. doi: 10.4236/ojst.2012.22025.