Definition of "periodontitis" []

• Any of a number of inflammatory diseases affecting the periodontium—the tissues that surround and support the teeth. (noun)

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• "In more advanced phases, the disease is known as periodontitis."
• "This oral disease is called periodontitis, in which bone-destroying cells are activated by toxins released by bacteria adhering to the surfaces of your teeth and then populate pockets around them."
• "But popular theory says that gum disease, also known as periodontitis, is caused by bacteria that overgrow in the mouth."