title: Acute exacerbation in chronic periodontal disease.
mesh_terms: D000328:Adult; D002908:Chronic Disease; D004846:Epithelial Attachment / Q000473:pathology; D006801:Humans; D008137:Longitudinal Studies; D008875:Middle Aged; D008954:Models, Biological; D010510:Periodontal Diseases / Q000473:pathology / Q000503:physiopathology*; D010514:Periodontal Pocket / Q000473:pathology; D012075:Remission, Spontaneous