Abstract
Objective: To determine the relative frequency and distribution of odontogenic and nonodontogenic cysts in a large Turkish population. Study Design A retrospective survey of jaw cysts was undertaken at the Oral Diagnosis and Radiology and Oral and Maxillofacial Surgery Department, Ondokuz Mayıs University Dental School, Samsun, Turkey. Data were retrieved from clinical files, imaging, and histopathology reports from 2000 to 2008; a total of 12,350 patients were included. In each case, we analyzed age, gender, type and number of cysts, and cyst location. Imaging patterns and pathologies associated with cystic lesions were also determined. Results: The prevalence of odontogenic and nonodontogenic cysts was 3.51%; males were affected more frequently than females. There were 452 odontogenic cysts (98.5%) and seven nonodontogenic cysts (1.5%). The most frequent odontogenic cyst was radicular (54.7%), followed by dentigerous (26.6%), residual (13.7%), odontogenic keratocyst (3.3%), and lateral periodontal cyst (0.2%). Nasopalatine duct cyst (1.5%) was the only nonodontogenic cyst. By age, cysts peaked in the third decade (24.2%). Concerning location, no statistically significant difference was found between the maxilla and mandible (p>0.05). The most frequent radiological feature of these lesions was unilocular cyst (93.7%). Pathologies associated with cystic lesions occurred in 14.7%. Conclusion: The prevalence of both odontogenic and nonodontogenic cysts were lower than that reported in many other studies. In our study population, cysts were mainly inflammatory in origin. Key words: Prevalence, odontogenic, nonodontogenic, cysts.
Highlights
Odontogenic cysts (OCs) are one of the most common lesions affecting the jaws
A review of the literature revealed that odontogenic cysts account for between 0.8% and 45.9% of the lesions diagnosed in the oral cavity (4,11); few reports can be found in the international literature on the prevalence of OC among the Turkish population (22)
Regarding cyst distribution according to type, no statistically significant difference was found between men and women (p>0.05). (Table 1) shows the distribution of cyst types according to diagnosis and gender
Summary
Odontogenic cysts (OCs) are one of the most common lesions affecting the jaws. OCs are derived from the epithelial component of the odontogenic apparatus or its remnants that lie entrapped within the bone or gingival tissue (1). Demographic profiles of odontogenic and nonodontogenic cysts have been reported in various age groups in several European and non-European countries, including Spain (2), Brazil (3-7), Israel (8), Mexico (9,10), United Kingdom (11-13), France (14), Canada (15), Italy (16), Chile (17), Greece (18), Nigeria (19), Lithuania (20), and Thailand (21). These studies show variations in the distribution and frequency of cyst types. A review of the literature revealed that odontogenic cysts account for between 0.8% and 45.9% of the lesions diagnosed in the oral cavity (4,11); few reports can be found in the international literature on the prevalence of OC among the Turkish population (22). The purpose of this study was to evaluate the prevalence and distribution of these lesions in a large population over a period of nine years (2000-2008), and to compare results with findings in the literature
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