noun (used with a singular verb)
the branch of dentistry dealing with the study and treatment of diseases of the periodontium.
Also, periodontia [per-ee-uh-don-shuh, -shee-uh] .

1945–50; < Neo-Latin periodont(ia) (see peri-, -odont, -ia) + -ics

periodontic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
periodontics (ˌpɛrɪəˈdɒntɪks)
(functioning as singular) Also called: periodontology the branch of dentistry concerned with diseases affecting the tissues and structures that surround teeth
[C19: from peri- + -odontics, from Greek odōn tooth]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

periodontics per·i·o·don·tics (pěr'ē-ə-dŏn'tĭks)
The branch of dentistry concerned with the care and treatment of the tissues surrounding and supporting the teeth. Also called periodontia.

per'i·o·don'tic or per'i·o·don'ti·cal adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
periodontics   (pěr'ē-ə-dŏn'tĭks)  Pronunciation Key 
The branch of dentistry that deals with the study and treatment of the tissues surrounding and supporting the teeth, especially the gums.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


dental specialty concerned with the prevention, diagnosis, and treatment of functional and structural diseases of the periodontal membrane and related tissues that surround and support the teeth. Degeneration or inflammation of these tissues can be caused by various systemic or local diseases or by poor oral hygiene. In some cases the cause is not established. Most commonly, periodontal diseases are caused by hardened bacteria, called bacterial plaque, which adheres to teeth and destroys periodontal tissue. The most prevalent periodontal disease is periodontitis, inflammation of the periodontium. If untreated, periodontitis leads to resorption of the portion of the jawbone that supports the teeth.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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