English Chronic periodontitis Cited by user Harrisonnelson1205 on 22 Jun 2021 Chronic periodontitis is one of the seven categories of periodontitis as defined by the American Academy of Periodontology 1999 classification system.
English Periodontal disease Cited by user 151.25.237.138 on 24 Apr 2021 Periodontal disease, also known as gum disease, is a set of inflammatory conditions affecting the tissues surrounding the teeth.