RHS Exam Study Guide| 117 QUESTIONS| WITH COMPLETE SOLUTIONS

What are the advantages of Digital Imaging? Correct Answer: No film or processing solution, less exposure to the patient The anterior wall of the sinus and lateral wall of the nose form; Correct Answer: Inverted Y As the target to film distance is increased, Will there be more or less distortion? Correct Answer: Less The basic unit for measuring ionizing radiation exposure in the air known as Correct Answer: Roentgen What is the best film to view lingual or buccal caries? Correct Answer: Occlusal What is the best film to use on an edentulous patient? Correct Answer: Pano The body tissue most sensitive to x-ray is; Correct Answer: Lymphocyte (white blood cells) cephalometric films are used primarily in which area of dentistry Correct Answer: orthodontic What material is the collimator made of? Correct Answer: Lead When exposing periapicals on an edentulous patient, the exposure time should; Correct Answer: Decrease the exposure by 1/2 or 1/4 What is the correct vertical angulation when taking a bitewing radiograph? Correct Answer: +10 degrees What chemical in the fixer that clears the unexposed silver halide crystals? Correct Answer: Ammonium Thiosulfate What is the primary diagnostic use of a bitewing radiograph? Correct Answer: Check for interproximal decay and crestal bone levels What is the primary use of occlusal dental radiographs? Correct Answer: Locate foreign bodies What is the recommended size of the lead collimator? Correct Answer: 2.75 inches What is the transfer of energy as it passes through matter called? Correct Answer: Absorption What term describes the loss of electrons from a substance? Correct Answer: Ionization