The prevalence, distribution, and radiological evaluation of dentigerous cysts in a Lebanese sample

Abstract

Purpose This study was performed to evaluate the prevalence, distribution, and radiological features (as per the Shear classification) of dentigerous cysts in a Lebanese sample. Materials and Methods It was an epidemiological, cross-sectional, 5-year retrospective study of 137 dentigerous cysts treated at Lebanese Army Dental Departments. The collected data comprised demographic and radiological information corresponding to patients from July 2015 to July 2020. Syndromic cases were excluded. Demographic data and the radiological features of cases were studied and analyzed. Results Dentigerous cysts were treated in 109 patients (58.7% males and 41.3% females; mean age: 28.3±16.3 years) out of 6,013 patients (52% males and 48% females), with a prevalence of 1.8%. Dentigerous cysts were more commonly found in patients in their second and third decades of life than in older age groups. Of the 109 patients, 22.9% had multiple dentigerous cysts. Of the 137 cysts, 71.5% were mandibular. The most prevalent anatomical location was the posterior mandible, followed by the posterior maxilla. The most commonly involved tooth was the mandibular third molar. Regarding radiological types, the central type was the most common (60.6%), followed by the lateral type (29.2%), and the circumferential type (10.2%). Conclusion The results of this study were similar to studies of other populations in terms of distribution and features. Multiple non-syndromic dentigerous cysts were more common than reported in other studies, which warrants further clinical studies to reveal previously undetected factors.

Developmental odontogenic cysts with special focus on the occurrence of multiple cysts: a single-centre retrospective study from the Czech Republic

“…The patients in the DC group were older than usually reported (see below) -most were diagnosed in the age range of 40 to 69. Some studies reported a peak in the second to the fourth decade [33][34][35]. Other studies reported the peak in the 5th and 6th decades [36][37][38], but in the 7th decade, a decrease was expected based on those results.…”

“…In our study sample, however, the proportion of patients with multiple DCs (6.6%) was higher than what is usually reported in the literature (Table 1). The only two studies reporting higher numbers of patients with multiple DCs are those by Noujem and Nasr (2021) [35] and Fickling (1968) [39], with an exceptionaly high rate of 22.9% and 20.9% respectively. Where the proportion of the total number of multiple cysts is concerned, it was 13.3% in our cohort.…”

Dentigerous Cysts with Diverse Radiological Presentation Highlighting Diagnostic Challenges

“…It develops from the accumulation of fluid between the reduced enamel epithelium of the dental follicle and the crown of an unerupted tooth ( Figure 14 ). The microscopic features of DC are dependent whether it is not inflamed or inflamed [ 8 , 9 , 17 , 18 ]. In the case of non-inflamed DC, the epithelial lining is formed by two to four layers of cuboidal/squamous non-keratinizing cells without rete ridges and a flat epithelium-connective tissue interface ( Figure 3 ).…”

Dentigerous cyst: proposal for a therapeutic algorithm and combined treatment plan

“…The DC appear in order of frequency, associated with the lower third molars, followed by canines. It usually occurs between second and third life´s decades, however it can also be found in childhood, predominantly in males, with a male / female ratio 2:1 3,4 .…”