Odontogenic tumors: a 14-year retrospective study in Santa Catarina, Brazil

Abstract

Odontogenic tumors (OTs) are lesions that develop exclusively on maxillary bones, and form a heterogeneous group. They vary from hamartomatous lesions to benign and malign tumors. Although they are rarely observed in dentistry clinics, it is extremely important for the dentist to be aware of them. The aim of this study was to investigate the incidence of odontogenic tumors diagnosed in the population of Florianópo-lis, Santa Catarina, Brazil. Cases of odontogenic tumors were selected from the anatomopathological diagnostic services at Federal University of Santa Catarina from 1998 to 2011. Clinical data on these cases were collected from biopsy reports and patient files. Seventy-eight cases of odontogenic tumors were surveyed. Of these diagnoses, 51% were keratocystic odontogenic tumors (KCOTs); the remaining cases were mainly ameloblastomas and odontomas. The most frequently observed lesion in this retrospective study was KCOT (more than half of cases). Thus, this study shows that modifying the classification of the OTs altered the frequency of the lesions, possibly making KCOT the most common lesion observed in diagnostic services worldwide.

Retrospective Study of 272 Odontogenic Tumors in a Brazilian Population

“…Corroborating with other studies (12,(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30), in our sample, benign tumors were prevalent. This low frequency of malignant tumors is similar to those reported in others countries (7)(8)(9)(10)(11)(12)19), but it is different than those reported in China that present more than 5% of cases as malignant tumors (16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29).…”

“…This low frequency of malignant tumors is similar to those reported in others countries (7)(8)(9)(10)(11)(12)19), but it is different than those reported in China that present more than 5% of cases as malignant tumors (16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29). We have observed a greater incidence of OTs in the female gender, result also found by Gaitán-Cepeda et al (30).…”

“…Furthermore, incidence herein obtained was higher (4.8%) than that found in other regions, which ranged from 1.3% to 3% (12,(18)(19)(20). These findings demonstrate that OTs have variable incidence worldwide and may present regional differences in a country with a continental dimension as Brazil.…”

“…Several retrospective studies of OTs published previously to the latest WHO classification (5) reported AMB and ODO being the most common tumors (7,13,19,29). However, the inclusion of KCOT has not only produced an increase in the frequency and prevalence of OTs, but also has modified the order of distribution of these tumors, making KCOT one of the most common OTs (18)(19)(20)(21)(22)30). OTs are uncommon lesions in the studied population and are represented mainly by the KCOT, AMB and ODO.…”

Odontogenic Tumor in India: A Review

“…These features were similar to the previously published literature. 19 Females are commonly affected than males, with the male to female ratio of 1:1.2, and these findings were not in accordance to the epidemiological reports of Ramos Gde O et al, 20 which have reported male predominance. Association of KCOT with nevoid basal cell carcinoma syndrome was recorded to be 6% in the previous literature, and interestingly, studies conducted in Brazil showed frequency as high as 40%.…”