Odontogenic tumors: analysis of 127 cases

Abstract

One hundred and twenty-seven cases of histologically confirmed odontogenic tumors were retrieved from a total of 5,289 oral and maxillary lesions diagnosed at the Division of Oral Pathology, Federal University of Rio Grande do Norte, during a period of 30 years (1970-1999). The most common histological diagnosis was odontoma (50.40%), followed by ameloblastoma (30.70%). The prevalence of odontogenic tumors was greater in females and the peak incidence occurred in the second and third decades of life. The main anatomical location was the mandible, and no malignant tumors were found.

Tumores odontogênicos: estudo clínico-patológico de 238 casos

“…These findings are similar to those in most studies 13 except for Hiroyuki et al's1 7 report. This neoplasm is usually found accidentally in routine exams.5 In our study, 80% of these cases were asymptomatic (p=0.023) ( Table 4) and showed no age preference ( Table 2).…”

“…This neoplasm was diagnosed mostly in patients aged below 30 years; published papers have reported that new odontomas are discovered up to the third decade of life. 5,6 Odontomas were more prevalent in the Tumor 1 100 --TOTAL 58 180 p=0,023 -chi-square test maxilla (57.5%) ( Table 3) and in females (68.6%) ( Table 1); this is similar to the findings of Santos et al 13 The incidence of the odontogenic mixoma was 6.3% of all odontogenic tumors in our study (Table 2), which is about two times less than that reported by MosquedaTaylor et al, 3 but comparable to North-American studies. 10 Our study revealed a slightly higher prevalence of this tumor in males (Table 1); Ladeinde et al 12 and Odukoia et al 6 have reported a higher frequency in females.…”

“…These lesions were more frequent in the mandible in our study (Table 3), contrary to some studies that have reported a higher frequency these tumors in the maxilla. 13 Lesions such as the squamous odontogenic tumor and the ameloblastic fibrodontoma were found in a single case each; both were females and presented mandibular pain. Our study confirmed the low frequency of these neoplasms as shown in other studies, 3,7,12,14 which underlines their rarity.…”

“…Some papers have reported that this tumor is more frequently found in the maxilla 4,13,17 and in female patients. 17 (Table 1); these findings were confirmed in our study, in which 53.9% of these lesions were found in the maxilla (Table 3) and 77% of these patients were female (Table 1), mostly in the second decade of life (7 of 13 cases) ( Table 2).…”

“…12 Few reports have been published in English about the frequency of odontogenic tumors in Latin America, particularly in Brazil. 13 The frequency was 1.29% 14 in a Chilean study of 362 cases.…”