IADR Abstract Archives
Odontogenic Tumors: A Study Based on 2005 and 2017 WHO Classifications
Objectives: The aim of this study was to determine the relative frequency of this heterogeneous group of lesions in a Chilean population, and to compare these data with previous reports.
Methods: We reviewed the records of 34,123 specimens from 1975 to 2014 since the pathological anatomy service of the Faculty of Dentistry of the University of Chile, using the criteria for histological typification published by the 2005 and 2017 World Health Organization (WHO).
Results: For 2005 and 2017 WHO, a total of 937 and 497 odontogenic tumors was confirmed, respectively. The most frequent clinical-histological type was to 2005 WHO: keratocyst odontogenic tumour (50.9%), followed by odontoma (22.84%) and ameloblastomas (11.21%) and to 2017 WHO: odontoma (43.1%), followed by ameloblastomas (21.1%) and cemento-ossifying fibroma (13.5).
Conclusions: Odontogenic tumors are infrequent lesions. Thus, the review of a large number of cases becomes a necessity for both the pathologist and the clinician. Studies on odontogenic tumors have been published in many parts of the world, but there is little information available in the English language literature on the relative frequency of odontogenic tumors in Latin America. Odontogenic tumors are uncommon lesions in the Chilean population and malignant odontogenic tumors are very rare. The relative frequency of various types of odontogenic tumors, as well as the age and sex distribution are similar to those reported in the North American series and different from those found in recently published Asian and African series.
Methods: We reviewed the records of 34,123 specimens from 1975 to 2014 since the pathological anatomy service of the Faculty of Dentistry of the University of Chile, using the criteria for histological typification published by the 2005 and 2017 World Health Organization (WHO).
Results: For 2005 and 2017 WHO, a total of 937 and 497 odontogenic tumors was confirmed, respectively. The most frequent clinical-histological type was to 2005 WHO: keratocyst odontogenic tumour (50.9%), followed by odontoma (22.84%) and ameloblastomas (11.21%) and to 2017 WHO: odontoma (43.1%), followed by ameloblastomas (21.1%) and cemento-ossifying fibroma (13.5).
Conclusions: Odontogenic tumors are infrequent lesions. Thus, the review of a large number of cases becomes a necessity for both the pathologist and the clinician. Studies on odontogenic tumors have been published in many parts of the world, but there is little information available in the English language literature on the relative frequency of odontogenic tumors in Latin America. Odontogenic tumors are uncommon lesions in the Chilean population and malignant odontogenic tumors are very rare. The relative frequency of various types of odontogenic tumors, as well as the age and sex distribution are similar to those reported in the North American series and different from those found in recently published Asian and African series.