Inflammation and loss of connective tissues supporting or surrounding the teeth. This may involve any part of the PERIODONTIUM. Periodontitis is currently classified by disease progression (CHRONIC PERIODONTITIS; AGGRESSIVE PERIODONTITIS) instead of age of onset. (From 1999 International Workshop for a Classification of Periodontal Diseases and Conditions, American Academy of Periodontology) (Experimental Factor Ontology, EFO_0000649)
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1 genes associated with the disease periodontitis. in GWAS and other genetic association datasets from the GAD Gene-Disease Associations dataset.
