periodontal

periodontaalinen 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%.