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      The Prevalence of Inflammatory and Developmental Odontogenic Cysts in a Libyan Population

      research-article
      , ,
      The Libyan Journal of Medicine
      CoAction Publishing
      polycystic, ovary, hirsutism, diabetes, obesity

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          Abstract

          Objective

          The aim of this study was to determine the prevalence of odontogenic jaw cysts in a Libyan population and to compare the data with previously published reports from other countries.

          Materials and methods

          We retrieved and analyzed 2190 case notes and biopsy records of the Department of Oral and Maxillofacial Surgery and the Department of Oral Pathology and Microbiology, Al Arab Medical Sciences University, Benghazi, Libya, dating from January 1990 to December 2005. There were 326 cases (14.8%) of diagnosed odontogenic cysts among the 2190 biopsies performed during this period. The cases were analyzed for age and sex distribution, site of presentation, association with impacted teeth, and the method of treatment.

          Results

          The male to female ratio of patients was 1.3:1 Radicular cysts accounted for 222 cases (68.1%), followed by dentigerous cysts (n=49, 15%) and odontogenic keratocysts (n=43, 14.1%). Mean ages of the patients were, respectively, 31.7, 22.7 and 36.1 years. The maxilla was more commonly involved than the mandible (1.3:1). The anterior maxilla was the commonest site (n=132, 37.4%) followed by the posterior mandible (n=96, 29.4%). Fifty three cases were associated with impacted teeth, and the highest frequency was for dentigerous cysts (n=37). Enucleation and curettage was performed on 300 patients, marsupialization on 14, and marginal/segmental resection on 12.

          Conclusion

          To our knowledge, this is the first such study on a Libyan population. Our results are comparable to studies from other countries. Knowledge of the relative frequencies and sites of presentation of odontogenic cysts in different ethno-geographic backgrounds is essential for the early diagnosis and management of these benign yet potentially destructive lesions.

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          Most cited references28

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          Relative incidence of odontogenic tumors and oral and jaw cysts in a Canadian population.

          The diagnoses of 40,000 consecutively accessioned oral biopsies from the Oral Pathology Diagnostic Service, University of Western Ontario, London, Canada, were reviewed. All odontogenic neoplasm, neoplasm-like lesions (tumors), and true cysts of the oral tissues and jaws were listed. Clinical data were reviewed, and microscopic diagnoses were confirmed for cases in which diagnoses were ambiguous. Records of all cases were examined to identify distant referrals that were not representative of the study population. Of a total of 445 (1.11%) odontogenic tumors, 392 (0.98%) were lesions from patients in the usual local drawing area of the biopsy service; 53 were referred from distant centers. From the local population, odontomas were by far the most common tumor (51.53%) followed by ameloblastomas (13.52%) and peripheral odontogenic fibromas (8.93%). Locally, radicular (periapical) cysts were the most common odontogenic cyst (65.15%) followed by the dentigerous cyst (24.08%) and the odontogenic keratocyst (4.88%). The most common nonodontogenic cyst was the nasopalatine duct cyst that accounted for 73.43% of this subset of cysts. Surprisingly few studies of this type are available, especially for odontogenic tumors. These data are important to assess geographic differences in the incidence of lesions and to allow clinicians to make realistic judgments in counseling patients before biopsy about the probability of diagnosis and risks associated with nonspecific clinical or radiographic lesions.
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            Range and demographics of odontogenic cysts diagnosed in a UK population over a 30-year period.

            The aim of this study was to determine the range of all histologically diagnosed odontogenic cysts along with age range, sex distribution and site of presentation over a 30-year period. All entries for odontogenic cysts occurring during 1975-2004 inclusive were retrieved and analysed for demographic data. A total of 55,446 specimens were received, of these 7121 (12.8%) specimens were diagnosed as odontogenic cysts. Radicular cyst was the most common diagnosis (52.3%), followed by dentigerous cyst (18.1) and odontogenic keratocysts (11.6%). Our study provides demographic data on a large series of odontogenic cysts in a European population. This is one of the largest series reported to date. Cysts such as the paradental cyst have a predilection for certain ages, sexes and sites. Odontogenic keratocysts and glandular odontogenic cysts have a marked propensity to recur as well as behave aggressively. It is essential that such lesions are detected as early as possible to minimize any necessary surgery.
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              The odontogenic keratocyst. A clinicopathologic study of 312 cases. Part I. Clinical features.

              An analysis was made of the clinical features of 312 acceptable cases of odontogenic keratocysts from the files of the Department of Oral Pathology, Indiana University School of Dentistry. A total of 5.1 per cent of the keratocysts were from patients with the basal-cell nevus syndrome and 5.8 per cent were from patients with multiple keratocysts but with no other features of the syndrome. There was a wide age range, with a peak incidence in the second and third decades of life. The mandible: maxilla ratio was 2:1, with the mandibular third molar area and ramus being the most common sites. Dentigerous cyst was the most frequent clinical as well as histologic diagnosis for the majority of the keratocysts in this study. The primordial cyst comprised the greatest percentage of keratocysts (44.4 per cent). A total of 50.3 per cent of the patients were symptomatic before seeking treatment, the most common finding being intraoral drainage and swelling. Their radiographic appearance was quite variable, although they frequently resembled ameloblastoma. These cysts may be very aggressive clinically. They have a relatively high recurrence rate, as previously reported in the literature, in comparison with other types of odontogenic cyst. The findings in this study support the theory that the histologic appearance of an odontogenic keratocyst may be assumed by any of the odontogenic or nonodontogenic cysts.
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                Author and article information

                Journal
                Libyan J Med
                LJM
                The Libyan Journal of Medicine
                CoAction Publishing
                1993-2820
                1819-6357
                01 June 2008
                2008
                : 3
                : 2
                : 75-77
                Affiliations
                Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Al-Arab Medical University, Benghazi, Libya
                Article
                LJM-3-075
                10.4176/071216
                3074284
                21499462
                6a8e70ab-e635-4f0f-bb30-bdf2772d41aa
                Copyright @ 2008

                This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License, permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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                Original Article

                Medicine
                diabetes,obesity,polycystic,ovary,hirsutism
                Medicine
                diabetes, obesity, polycystic, ovary, hirsutism

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