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Updated: Jun 18, 2026

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Published on: August 22, 2022
Paradigm Shift in World Health Organization Classification of Odontogenic Tumors: A 12 Years of Institutional
Jagveer Yadav1, Anjali Narwal1, Mala Kamboj1
1Department of Oral Maxillofacial Pathology and Microbiology, Pandit Bhagwat Dayal Sharma Post Graduate Institute of Medical Sciences, Rohtak, Haryana 124001 India.
Background:
Lack of consistent international identification standards has led to various modifications of the classification of odontogenic tumors over the past. As a result, their prevalence and frequency distribution have significantly altered.
Aim And Objectives:
This study aimed to highlight the effect of shifting classification systems on the prevalence and relative frequency of odontogenic tumors. The secondary goal was to compare the demographics of distinct histological categories of odontogenic tumors to published literature.
Method:
The present retrospective observational research obtained data on odontogenic tumors diagnosed between 2010 and 2022. Their prevalence and frequency distribution were re-graded based on 2005, 2017 and 2022 World Health Organization classifications.
Results:
Over the past 12 years, there were 226, 145 and 149 cases of odontogenic tumors reported using the three modifications with a prevalence of 4.98%, 3.28% and 3.20%.
Conclusion:
The variability in the prevalence of odontogenic tumors is attributed to the continually evolving classification systems. Variations in the relative incidence of different histological types of odontogenic tumors might represent varied populations with diverse genetic and environmental factors.
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