title: Determination of periodontal disease activity by a bone resorption assay.
mesh_terms: D000539:Alveolar Process / Q000378:metabolism* / Q000503:physiopathology; D001862:Bone Resorption / Q000378:metabolism* / Q000503:physiopathology; D002118:Calcium / Q000378:metabolism; D002478:Cells, Cultured; D003430:Cross-Sectional Studies; D005881:Gingiva / Q000166:cytology / Q000378:metabolism; D006801:Humans; D008137:Longitudinal Studies; D010510:Periodontal Diseases / Q000378:metabolism / Q000473:pathology / Q000503:physiopathology*
chemical_list: D002118:Calcium