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Noun periodontal disease has 1 sense
  1. periodontal disease, periodontitis - a disease that attacks the gum and bone and around the teeth
    --1 is a kind of disease
    --1 has particulars:
     pyorrhea, pyorrhoea, pyorrhea alveolaris, Riggs' disease; alveolar resorption; gingivitis; ulatrophia
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