title: A reproducible method for evaluating radiographic changes in periodontal defects.
mesh_terms: D000328:Adult; D003723:Dental Amalgam; D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D010518:Periodontitis / Q000000981:diagnostic imaging*; D011861:Radiography, Dental / Q000592:standards*; D013679:Technology, Radiologic / Q000295:instrumentation*
chemical_list: D003723:Dental Amalgam