Odontogenic tumours: A review of 266 cases.

Ao Lawal,Ao Adisa,Aa Olusanya

doi:10.4317/jced.50949

Ao Lawal, Ao Adisa + Show 1 more

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https://doi.org/10.4317/jced.50949

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Abstract

Objectives: The aim of this study was to examine the relative frequency of odontogenic tumours at a tertiary hospital in Ibadan, as well as to study the various histologic types based on WHO 2005 classification and to compare results from this study with those of previous studies. Study design: The records of the Oral Pathology Department of University College Hospital were reviewed. Lesions diagnosed as odontogenic tumours were categorized into four groups based on WHO 2005 classification and were analyzed for age, sex and site using SPSS for Window (version 18.0; SPSS Inc. Chicago, IL) and frequency tables were generated. Results: Two hundred and sixty six (41.7%) cases of odontogenic tumours were seen. The mean age of occurrence was 32.6 (±15.815) years (range3-82 years) and peak age was in the third decade of life. Eleven (4.1%) malignant odontogenic tumours were seen. Ameloblastoma with 65.4% of cases was the most common odontogenic tumour followed by fibromyxoma (14.7%), no case of odontoma was seen in this series. Conclusion: The findings were mostly similar to those of African and Asian series and showed variations from reports from the Americas. The reason for the disparity in African and American series needs further investigations. Key words:Odontogenic tumour, classification, Nigeria.

Highlights

Odontogenic tumours (OTs) constitute a wide range and diverse kind of lesions derived from tooth forming apparatus and its reminants (1)
The relative frequency of OTs in this study was gotten from comparison with tumours and tumour like lesions of the jaws as compared to other studies whose comparison was based on all biopsies
Young Lu et al (1) and Okada et al (11) from the Asian continent showed in their series that ameloblastoma represented 58.6% and 68.9% of OTs respectively while Ladeinde et al (9), Adebayo et al (4) Chidzonga et al (8) and Tawfik (12) all from Africa reported that ameloblastoma represented 63%,73%,79.1%, and 41.5% of OTs respectively

Summary

Introduction

Odontogenic tumours (OTs) constitute a wide range and diverse kind of lesions derived from tooth forming apparatus and its reminants (1). The relative frequency of OTs obtained from studies from different parts of the world, have varied widely. Whilst American (2, 3) studies showed odontomas as the most common OT, studies from Africa (4) and Asia (1) have shown ameloblastoma to be, overwhelmingly, the most common OT. These disparities have being suggested to be due to the differences in terminology and classification and possibly due to racial and or genetic differences in the occurrence of the various types of OTs ( 3).

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