In the bisecting technique, the film is placed 1) Parallel to the tooth 2) As close as possible 3) Parallel to the bisector 4) Perpendicular to the bisector
RadiologyAnswer: 2
Which of the following is radiopaque 1) Periapical abscess 2) Periapical cyst 3) Condensing osteitis 4) Early cementoma
RadiologyAnswer: 3
A thin radiolucent line which follows the root outline on X-rays is 1) Lamina dura 2) Periodontal ligment 3) Nutrient canal 4) Pulp
RadiologyAnswer: 2
The following projection best locates the position of impacted third molar 1) Lateral oblique view of mandible 2) Waters view 3) Occlusion view combined with periapical view 4) Occlusal view combined with bite wing
RadiologyAnswer: 3
The residual biologic damage tha remains following an exposure to radiation is called 1) Direct effect 2) Indirect effect 3) Cumulative effect 4) Tolerance
RadiologyAnswer: 3
80 kVp and 15 mA and source film distance of 8 inches exposure time for a film is 1/2 second. Keeping the kilovoltage and miliamperage constant exposure time at 16 inches 1. 1/2 second 2. 1 second 3. 2 second 4. 4 second
RadiologyAnswer: 3
Most radiosensitive cells are 1. Vegetative intermitotic cells 2. Reverting postmitotic cells 3. Differential intermitotic cells 4. Fixed postmitotic cells
RadiologyAnswer: 1
Which of the following is not a form of ionising radiation 1) Alpha-particles 2) Beta-particles 3) X-rays 4) Radiowaves
