title: The effect of calcium in periodontal disease.
mesh_terms: D000539:Alveolar Process / Q000473:pathology; D001862:Bone Resorption / Q000209:etiology; D002118:Calcium / Q000172:deficiency* / Q000378:metabolism; D002136:Calcium, Dietary / Q000008:administration & dosage; D003773:Dental Plaque / Q000382:microbiology; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000209:etiology; D010510:Periodontal Diseases / Q000209:etiology*
chemical_list: D002136:Calcium, Dietary; D002118:Calcium