Radiation Health and Safety Exam Questions with Correct Answers
Apical lesion - Answers Periapical cyst
Barrier envelopes - Answers Minimize contamination after exposure of the film
Maxillary central incisors - Answers Region in which root fractures occur most often
Panoramic - Answers Type of radiograph taken to evaluate mandibular fractures
Kilovoltage - Answers Determinnes the quality of the x-rays
Advantage of double-emulsion intramural films - Answers Less radiation exposure to patients
Thyroid tissue - Answers Tissue that lies within the primary dental beam and receives a lot of secondary
radiation
Reticulation of emulsion - Answers This happens when there is a sudden change in temperature
between the developer solution and the water bath
Affect the life of processing solutions - Answers Number of films being processed, size of films
processed, age of solutions
Developing time - Answers 5 minutes
Fixing time - Answers 10 minutes (2x developing time)
Causes of dark films - Answers Overexposure and underdevelopment
Reversing film to the x-ray beam - Answers This will cause a geometric pattern on the film
Bisecting technique - Answers When the imaginary angle that is bisected is formed between the long
axis of the tooth and the long axis of the film
Buccal object rule - Answers Technique or concept that provides for orientation of structures seen in
two radiographs exposed at different angles to determine buccal-lingual relationship of an object
Bisecting technique - Answers The tooth-film distance is minimum
Paralleling technique - Answers All bitewings are taken using this technique
Main disadvantage of a panoramic film - Answers Loss of definition and detail
Lateral oblique - Answers Best method for taking a radiograph of an impacted third molar in mandible
Lateral plane - Answers Conventional panoramic projection and will show right and left TMJ in this plane
One advantage of the storage phosphor technique - Answers The sensor is slightly more flexible
Apical lesion - Answers Periapical cyst
Barrier envelopes - Answers Minimize contamination after exposure of the film
Maxillary central incisors - Answers Region in which root fractures occur most often
Panoramic - Answers Type of radiograph taken to evaluate mandibular fractures
Kilovoltage - Answers Determinnes the quality of the x-rays
Advantage of double-emulsion intramural films - Answers Less radiation exposure to patients
Thyroid tissue - Answers Tissue that lies within the primary dental beam and receives a lot of secondary
radiation
Reticulation of emulsion - Answers This happens when there is a sudden change in temperature
between the developer solution and the water bath
Affect the life of processing solutions - Answers Number of films being processed, size of films
processed, age of solutions
Developing time - Answers 5 minutes
Fixing time - Answers 10 minutes (2x developing time)
Causes of dark films - Answers Overexposure and underdevelopment
Reversing film to the x-ray beam - Answers This will cause a geometric pattern on the film
Bisecting technique - Answers When the imaginary angle that is bisected is formed between the long
axis of the tooth and the long axis of the film
Buccal object rule - Answers Technique or concept that provides for orientation of structures seen in
two radiographs exposed at different angles to determine buccal-lingual relationship of an object
Bisecting technique - Answers The tooth-film distance is minimum
Paralleling technique - Answers All bitewings are taken using this technique
Main disadvantage of a panoramic film - Answers Loss of definition and detail
Lateral oblique - Answers Best method for taking a radiograph of an impacted third molar in mandible
Lateral plane - Answers Conventional panoramic projection and will show right and left TMJ in this plane
One advantage of the storage phosphor technique - Answers The sensor is slightly more flexible
