Dental Assisting Radiology Practice Exam With Complete Solution

Dental Assisting Radiology Practice Exam With Complete Solution A lead apron and a thyroid collar - must be used on all patients for all exposures A good technique for reducing the radiation exposure to both patient and operator is the use of - fast film or digital imaging A patient is concerned with radiation exposure. You can assure him that your office uses the ALARA concept, which includes - reducing the number of exposures, minimizing retakes, keeping exposure levels as low as possible All of the following structures w ill appear radiolucent on dental x -ray film except - metal restorations An example of cumulative radiation exposure is - cataracts, leukemia, cancer Anything that occupies space and has a form or shape is - matter Because the entire x -ray area is consid ered a radiation hazard area, a radiation hazard sign must be posted in - sight of patients, and sight of personnel Chronic radiation exposure occurs when _______ dose of radiation is received over a _______time period - small; long Damage caused by ioni zing x -radiation to genetic cells: - can affect future generations Damage to which type of cell is passed on to future generations? - genetic cell Exposure to radiation: - no matter how small, has the potential to cause harmful biologic change How much filtration is federally required for a dental x -ray machine operating over 70 kVp? - 2.5 mm One of the rules of radiation protection is never stand closer than _____ feet from the x -ray unit during an exposure - 6 Primary radiation is: - also called the useful beam, the beam of x -ray that comes from the target Secondary radiation: - refer to x -radiation that is created when the primary beam interacts with matter The Guidelines for Prescribing Dental Radiographs issued by the ADA and the FDA recommend which of the following dental imaging procedures for a pregnant patient? - Radiographic imaging procedures do not need to be altered because of pregnancy The maximum permissible dose for an occupational worker for an individual 18 years of age or older is _____rem/year - 5 The x -ray was discovered on November 8, 1895, by: - Wilhelm Conrad Roentgen Who should hold the film in a patient's mouth if the patient is unabl e to do so? - Parent or relative of the patient When the matter switch is on: - the electron cloud is emitted An extraoral dental x -ray film is: - more sensitive to light than intraoral film Automatic film processing requires _____than manual film proce ssing does - less equipment Dental film holders, used to position and hold the dental x -ray films in the patient's mouth, include: - XPC and disposable block, EeZee -Grip and EndoRay Film speed is determined by the: - thickness of silver bromide salt, and size of the silver bromide crystals The correct order of steps in manual film processing is: - develop. rinse, fix, wash The extraoral film placed outside the mouth during x -ray exposure is: - panoramic The idea time and temperature for manual developi ng is: - 5 minutes at 68 degrees C The most commonly used film size for adult intraoral dentistry is size: - #2 The purpose of the lead foil in the dental film packet is to: - reduce film fogging The radiographic image is located within the ____ of the radiographic film - gelatin that suspends the emulsion The recommended distance between the safelight and where the films are unwrapped is: - 4 feet The safest place to store unopened boxes of dental film is in the: - darkroom When film emulsion interacts with x -ray, the result is: - a latent image