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Table 2 Summary of number of classes used in the OHD

From: Structuring, reuse and analysis of electronic dental data using the Oral Health and Disease Ontology

Ontology

Number of Classes

Foundational Model of Anatomy

1515

Oral Health and Disease Ontology

192

Current Dental Terminology codes

174

Ontology for General Medical Science

74

Basic Formal Ontology

32

Information Artifact Ontology

14

Ontology for Biomedical Investigations

13

Common Anatomy Reference Ontology

3

Ontology of Medically Related Social Entities

3

NCBI Taxon

1

Total

1947