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[per-ee-uh-don-shuh m, -shee-uh m] /ˌpɛr i əˈdɒn ʃəm, -ʃi əm/

noun, plural periodontia
[per-ee-uh-don-shuh, -shee-uh] /ˌpɛr i əˈdɒn ʃə, -ʃi ə/ (Show IPA)
the bone, connective tissue, and gum surrounding and supporting a tooth.

1828; see periodontal.

periodontium per·i·o·don·ti·um (pěr’ē-ə-dŏn’shē-əm)
n. pl. per·i·o·don·ti·a (-shē-ə, -shə)
The tissues that surround and support the teeth, including the gums, cementum, periodontal ligament, and alveolar and supporting bone. Also called alveolodental membrane, peridental membrane.


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  • Periodontology

    [per-ee-oh-don-tol-uh-jee] /ˌpɛr i oʊ dɒnˈtɒl ə dʒi/ noun 1. .

  • Periodontosis

    [per-ee-oh-don-toh-sis] /ˌpɛr i oʊ dɒnˈtoʊ sɪs/ noun, Dentistry. (no longer in technical use) 1. . periodontosis per·i·o·don·to·sis (pěr’ē-ō’dŏn-tō’sĭs) n. A degenerative disease of the periodontal ligament and tooth sockets, characterized by looseness and migration of teeth.

  • Period-piece

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