title: Longitudinal study of alveolar bone mass changes by 125I absorptiometry in periodontitis and normal subjects.
mesh_terms: D000042:Absorption; D000328:Adult; D000539:Alveolar Process / Q000033:anatomy & histology*; D001862:Bone Resorption / Q000473:pathology; D006801:Humans; D007457:Iodine Radioisotopes; D008137:Longitudinal Studies; D010518:Periodontitis / Q000473:pathology*
chemical_list: D007457:Iodine Radioisotopes