title: Observations on the clinical effects of orthoidontics on the periodontium.
mesh_terms: D001862:Bone Resorption / Q000209:etiology; D005882:Gingival Diseases / Q000209:etiology; D009971:Orthodontics, Corrective / Q000009:adverse effects; D010519:Periodontium / Q000473:pathology; D012391:Root Resorption / Q000209:etiology