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Webster 1913 Edition

(pĕr-ĭ-ō̍-dŏn′tal)

Adj.

[Pref.

peri-

+ Gr.

ὀδούς

ὀδόντος

, tooth.]

(Anat.)

Surrounding the teeth.

periodontal ‎(not comparable)

surrounding a tooth
of, or relating to periodontics
- 2002, Leif Tronstad, "Clinical Endodontics: A Textbook", p. 70
  Recently it has been shown that the bacterial flora of endodontic and periodontal abscesses differ in certain aspects. Thus, in an endodontic abscess, the number of spirochetes is between 0 and 10%, whereas in a periodontal abscess the spirochete count is about 40%.