title: A comparative study of radiation doses received from constant direct current and conventional self-rectified panoramic dental x-ray equipment.
mesh_terms: D004869:Equipment Safety; D006801:Humans; D008953:Models, Anatomic; D011829:Radiation Dosage; D011861:Radiography, Dental / Q000295:instrumentation*; D011862:Radiography, Panoramic / Q000295:instrumentation*