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. 2009 Spring;3(2):64-6.
doi: 10.5681/joddd.2009.015. Epub 2009 Jun 5.

Developmental odontogenic cysts of jaws: a clinical study of 245 cases

Javad Yazdani  1 , Shiva Solahaye Kahnamouii
Affiliations

Developmental odontogenic cysts of jaws: a clinical study of 245 cases

Javad Yazdani et al. J Dent Res Dent Clin Dent Prospects. 2009 Spring.

Abstract

Background and aims: The aim of this study was to investigate the relative frequency of developmental odontogenic cysts in an Iranian population.

Materials and methods: In this study 245 cysts from both jaws, treated in the Faculty of Dentistry at Tabriz University of Medical Sciences during a 10-year period from 1998 to 2008, were analyzed in order to evaluate the incidence of such cysts. We had permission from all the patients. Case histories of 65% of male and 35% of female patients were analyzed. The age of the patients varied from 14 to 64 years, with an average of 33.21 ± 10.89.

Results: In this 10-year study of odontogenic cysts, 97 cases were developmental odontogenic cysts with the following inci-dence: dentigerous cyst, 44%; odontogenic keratocyst, 36%; primordial cyst, 9%; Gorlin cyst, 2%; lateral periodontal cyst, 3%; eruption cyst, 3%; and gingival cyst, 3% (adults 2%, infants 1%). A total of 60% of the cysts were found in the mandible and 40% in the maxilla. Regarding the mandible, the molar region was involved in 47% of the cases, premolar region in 33% and anterior region in 20% (total = 100%). Regarding the maxilla, the canine-to-canine region was involved in 52% of the cases, premolar region in 20% and molar region in 28% (total = 100%).

Conclusion: An important finding in this study was the fact that 39% of the jaw cysts were developmental odontogenic cysts and the most common developmental odontogenic cysts were dentigerous cyst and OKC (odontogenic keratocyst).

Keywords: Developmental cyst; dentigerous cyst; odontogenic keratocyst; oral cyst.

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