title: Reliability of volume measurements with the new Periotron 6000.
mesh_terms: D005069:Evaluation Studies as Topic; D005883:Gingival Crevicular Fluid; D005891:Gingivitis; D006801:Humans; D010517:Periodontics / Q000295:instrumentation*; D010949:Plasma / Q000032:analysis; D012463:Saliva / Q000032:analysis; D012965:Sodium Chloride / Q000032:analysis
chemical_list: D012965:Sodium Chloride