title: [Pathology of periodontal disease].
abstract: Periodontal diseases are usually divided into two categories, periapical and marginal periodontal diseases, according to the sites. The marginal periodontitis is common and causes loss of teeth in the adult. This begins as a marginal gingivitis, which usually progresses to destructive chronic periodontitis. The authors describe here the classification, pathology and various related factors of human adult periodontitis.
authors.affiliation: Department of Oral Pathology, Meikai University School of Dentistry.
authors.forename: J
authors.initials: J
authors.lastname: Ohno
authors.forename: K
authors.initials: K
authors.lastname: Kusama