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Periodontal disease is a type of disease that affects one or more of the periodontal tissues:
While many different diseases affect the tooth-supporting structures, plaque-induced inflammatory lesions make up the vast majority of periodontal diseases and have traditionally been divided into two categories:
While in some sites or individuals, gingivitis never progresses to periodontitis, data indicates that gingivitis always precedes periodontitis.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
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