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Periodontitis, or pyorrhea alveolaris, disease of the gums and bones surrounding the teeth. Caused by inadequate hygiene or nutrition, periodontitis is symptomized by inflamed, bleeding, or receding gums and loose teeth. It may be treated by plaque removal or oral surgery.

See also: Dentistry.

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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Pennsylvania Dutch to Pima