40 HOUR RADIATION SAFETY FINAL PAPER 2025/2026
QUESTIONS WITH ANSWERS GRADED A+
✔✔Radiographs mounted with the raised portions of the dots toward the observer
(labial mounting) are examined as though the observer is - ✔✔Outside the mouth
looking in
✔✔A film accidentally exposed to white light between developing and fixing will appear -
✔✔dark
✔✔Stirring the developing and fixing solutions before manually processing films will -
✔✔Provide uniform concentrations
✔✔If there is no teeth to serve as guides, which of the following landmarks indicate a
maxillary molar area radiograph - ✔✔Tuberosity
✔✔Which of the following materials is MOST resistant to the penetration of ionizing
radiation? - ✔✔Lead
✔✔In which radiographic technique is the patient positioned in a device to support his
chin? - ✔✔Panoramic
✔✔What is the major advantage in using the highest speed film and higher Kilovoltage
(kV) - ✔✔Reduces the radiation to patient
✔✔The best way to correct a cone cutting error is to - ✔✔Adjust film position
✔✔If all known radiation safety precautions are exercised, an operator who is pregnant
can safely expose radiographs during the operator's - ✔✔entire pregnancy
✔✔Should the exposure time change when radiographing an edentulous adult patient
versus an adult patient with a full dentition? - ✔✔yes, its decrease
✔✔If a dental auxiliary's radiation badge report indicates exposure to small amounts of
radiation, what should be done first? - ✔✔evelauate the xray equipment and techniques
✔✔In dental radiography, it is necessary to have a filter to - ✔✔eliminate the less
penetrating x-rays from the primary beam
✔✔The BEST radiograph to choose to evaluate a suspected sublingual salivary duct
obstruction is - ✔✔Occlusal
, ✔✔What information helps to distinguish maxillary molar radiographs from mandibular
molar radiographs - ✔✔The outline of the maxillary sinus is visible
✔✔The time between exposure to x rays and the appearance of radiation damage is the
- ✔✔Latent period
✔✔Foreshortening of the radiographic image when using the bisecting angle technique
(BAT) results from too - ✔✔Much vertical angulation
✔✔Contrast on a dental radiograph can be altered by changing the - ✔✔kilovoltage
✔✔Which of the following should be performed to control the quality of x ray processing
solutions in an automatic processor - ✔✔Check solution levels daily
✔✔The crystals found in the emulsion of intraoral dental film that are sensitive to
radiation are made of - ✔✔Silver halide (bromide)
✔✔Tube head rotation during exposure is required for which of the following
techniques? - ✔✔Panoramic
✔✔For intraoral radiology, a double film packet is used to - ✔✔Produce identical films
with a single exposure
✔✔Bitewing films are usually used to - ✔✔Detect carries
✔✔Which of the following landmarks would be most likely to indicate the midline of the
mandible? - ✔✔genial tubercles
✔✔Bremsstrahlung (breaking radiation) is produced when electrons collide with the
target, creating - ✔✔Secondary radiation
✔✔The ability of x rays to remove electrons from an atom is called - ✔✔Ionization
✔✔Atoms the have lost electrons are referred to as - ✔✔Ions
✔✔The harmful effects of x irradiation on human tissue is - ✔✔Cumulative
✔✔The human tissue most sensitive to ionizing radiation is the - ✔✔Formative embryo
✔✔According to government guidelines, the yearly while body radiation dose for
occupationally exposed workers must not exceed - ✔✔5 rems (50 mSv)
QUESTIONS WITH ANSWERS GRADED A+
✔✔Radiographs mounted with the raised portions of the dots toward the observer
(labial mounting) are examined as though the observer is - ✔✔Outside the mouth
looking in
✔✔A film accidentally exposed to white light between developing and fixing will appear -
✔✔dark
✔✔Stirring the developing and fixing solutions before manually processing films will -
✔✔Provide uniform concentrations
✔✔If there is no teeth to serve as guides, which of the following landmarks indicate a
maxillary molar area radiograph - ✔✔Tuberosity
✔✔Which of the following materials is MOST resistant to the penetration of ionizing
radiation? - ✔✔Lead
✔✔In which radiographic technique is the patient positioned in a device to support his
chin? - ✔✔Panoramic
✔✔What is the major advantage in using the highest speed film and higher Kilovoltage
(kV) - ✔✔Reduces the radiation to patient
✔✔The best way to correct a cone cutting error is to - ✔✔Adjust film position
✔✔If all known radiation safety precautions are exercised, an operator who is pregnant
can safely expose radiographs during the operator's - ✔✔entire pregnancy
✔✔Should the exposure time change when radiographing an edentulous adult patient
versus an adult patient with a full dentition? - ✔✔yes, its decrease
✔✔If a dental auxiliary's radiation badge report indicates exposure to small amounts of
radiation, what should be done first? - ✔✔evelauate the xray equipment and techniques
✔✔In dental radiography, it is necessary to have a filter to - ✔✔eliminate the less
penetrating x-rays from the primary beam
✔✔The BEST radiograph to choose to evaluate a suspected sublingual salivary duct
obstruction is - ✔✔Occlusal
, ✔✔What information helps to distinguish maxillary molar radiographs from mandibular
molar radiographs - ✔✔The outline of the maxillary sinus is visible
✔✔The time between exposure to x rays and the appearance of radiation damage is the
- ✔✔Latent period
✔✔Foreshortening of the radiographic image when using the bisecting angle technique
(BAT) results from too - ✔✔Much vertical angulation
✔✔Contrast on a dental radiograph can be altered by changing the - ✔✔kilovoltage
✔✔Which of the following should be performed to control the quality of x ray processing
solutions in an automatic processor - ✔✔Check solution levels daily
✔✔The crystals found in the emulsion of intraoral dental film that are sensitive to
radiation are made of - ✔✔Silver halide (bromide)
✔✔Tube head rotation during exposure is required for which of the following
techniques? - ✔✔Panoramic
✔✔For intraoral radiology, a double film packet is used to - ✔✔Produce identical films
with a single exposure
✔✔Bitewing films are usually used to - ✔✔Detect carries
✔✔Which of the following landmarks would be most likely to indicate the midline of the
mandible? - ✔✔genial tubercles
✔✔Bremsstrahlung (breaking radiation) is produced when electrons collide with the
target, creating - ✔✔Secondary radiation
✔✔The ability of x rays to remove electrons from an atom is called - ✔✔Ionization
✔✔Atoms the have lost electrons are referred to as - ✔✔Ions
✔✔The harmful effects of x irradiation on human tissue is - ✔✔Cumulative
✔✔The human tissue most sensitive to ionizing radiation is the - ✔✔Formative embryo
✔✔According to government guidelines, the yearly while body radiation dose for
occupationally exposed workers must not exceed - ✔✔5 rems (50 mSv)
