Definition of "periodontal"

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%.

2002, Leif Tronstad, Clinical Endodontics: A Textbook, page 70