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Dental health and periodontal disease. The tooth is composed of enamel, dentine, cementum, and the pulp. In healthy individuals, the alveolar bone ends approximately 1 mm beyond the cemento‐enamel junction (marked by an asterisk). Periodontitis is characterized by progressive destruction of the tooth‐supporting tissues (alveolar bone, periodontal ligament, root cementum, and gingival attachment)
