title: Dental radiography series. 8. Shortcomings of the OPG machine.
authors.forename: J
authors.initials: J
authors.lastname: Semple
authors.forename: D
authors.initials: D
authors.lastname: Gibb
mesh_terms: D049673:History, 20th Century; D006801:Humans; D011862:Radiography, Panoramic / Q000266:history / Q000295:instrumentation / Q000592:standards*; D014076:Tooth Diseases / Q000000981:diagnostic imaging