RHS EXAM LATEST VERSION UPDATED AND
REVISED IN 2025/2026
Which of the following can be used to measure excessive occupational
exposure ? - ANSWER ->Dosimeter (worn at WAIST) , never worn outside of
office and sent to company to evaluate).
Which of the following is a long-term effect of radiation? - ANSWER -
>Genetic defects
Which of the following errors occur when the vertical angulation is
incorrect? - ANSWER ->Elongation (VA was flat)
Which of the following can be observed on a panoramic radiograph when
the patient chin is tipped downward - ANSWER ->Exaggerated smile
Which organization, regulates, disinfectants, and chemical sterilants? -
ANSWER ->EPA
After the completion of a radiographic procedure, the PID should be? -
ANSWER ->disinfected (it can also be covered with a barrier)
Which of the following describes a double ended PSP holder use for
posterior and anterior teeth? - ANSWER ->EEZEE-Grip When placing
periamical images in a template, what information helps to distinguish
maxillary molar images from mandibular molar images? - ANSWER ->The
maxillary sinus outline is visible (the floor of the max sinus is radiopaque)
,A cephalometric radiograph is PRIMARILY used to evaluate ... - ANSWER -
>lateral jaw development
If a dental assistant dosimeter badge report indicates exposure to radiation,
what should be done first? - ANSWER ->Evaluate the x-ray equipment and
techniques
Which of the following radiolucencies may be mistaken for carious lesions? -
ANSWER ->cervical burnout on dental image
The penetrating x-ray beam produced during dental radiography is called ... -
ANSWER ->Primary radiation (beam that exists the PID)
To assist the patient and controlling the gag reflects the dental assistant
should - ANSWER ->Use a distraction technique
When exposing a panoramic image on in edentulous patient which of the
following would a dental assistant, use to stabilize the upper and lower arch
on the bike block? - ANSWER >Cotton rolls
The time between patient exposure to radiation in the appearance of
biological damage is the ... - ANSWER ->Latent period
Dental healthcare personnel, who are pregnant can exposure radiographs
during the - ANSWER ->entire pregnancy
Which of the following extraoral radiographs is used to evaluate impacted
teeth, large lesions and fractures of the mandible ? - ANSWER ->lateral jaw
projection
When taking in occlusal radiograph, the PSP packet should extend from the
patient's mouth by approximately .... - ANSWER ->1/8 - beyond apices and
1/8 to 1/4 in beyond incisal or occlusal edge
, The occlusal plane will appear diagonal in the radiograph when there is an -
ANSWER ->Incorrect placement of image receptor
What is the name of the process for the harmful effects of radiation? -
ANSWER ->Ionization
Using the ALARA concept, as a guideline for radiographs, include all of the
EXCEPT - ANSWER ->using a circular PID (using a rectangular reduces by 60-
70%, but can cause cone cutting)
Which of the following can help to protect patients from excess radiation
damage to tissues - ANSWER ->High kVP
Which of the following regulates the manufacturing in installation of x-ray
equipment - ANSWER ->Federal government
The position-indicating device (PID) shape that must effectively reduces
patient exposure to radiation ... - ANSWER -
>rectangular
Which of the following would you adjust to produce wave links with the
greatest penetrating power? - ANSWER ->kVp. (affects
QUALITY of beam)
Use of a thyroid collar is recommended for all of the following radiographic
exposures EXCEPT - ANSWER ->panoramic
Which of the following was established to address the education and
certification of operators of radiographic equipment - ANSWER ->Consumer-
Patient Radiation Health and
Safety Act
REVISED IN 2025/2026
Which of the following can be used to measure excessive occupational
exposure ? - ANSWER ->Dosimeter (worn at WAIST) , never worn outside of
office and sent to company to evaluate).
Which of the following is a long-term effect of radiation? - ANSWER -
>Genetic defects
Which of the following errors occur when the vertical angulation is
incorrect? - ANSWER ->Elongation (VA was flat)
Which of the following can be observed on a panoramic radiograph when
the patient chin is tipped downward - ANSWER ->Exaggerated smile
Which organization, regulates, disinfectants, and chemical sterilants? -
ANSWER ->EPA
After the completion of a radiographic procedure, the PID should be? -
ANSWER ->disinfected (it can also be covered with a barrier)
Which of the following describes a double ended PSP holder use for
posterior and anterior teeth? - ANSWER ->EEZEE-Grip When placing
periamical images in a template, what information helps to distinguish
maxillary molar images from mandibular molar images? - ANSWER ->The
maxillary sinus outline is visible (the floor of the max sinus is radiopaque)
,A cephalometric radiograph is PRIMARILY used to evaluate ... - ANSWER -
>lateral jaw development
If a dental assistant dosimeter badge report indicates exposure to radiation,
what should be done first? - ANSWER ->Evaluate the x-ray equipment and
techniques
Which of the following radiolucencies may be mistaken for carious lesions? -
ANSWER ->cervical burnout on dental image
The penetrating x-ray beam produced during dental radiography is called ... -
ANSWER ->Primary radiation (beam that exists the PID)
To assist the patient and controlling the gag reflects the dental assistant
should - ANSWER ->Use a distraction technique
When exposing a panoramic image on in edentulous patient which of the
following would a dental assistant, use to stabilize the upper and lower arch
on the bike block? - ANSWER >Cotton rolls
The time between patient exposure to radiation in the appearance of
biological damage is the ... - ANSWER ->Latent period
Dental healthcare personnel, who are pregnant can exposure radiographs
during the - ANSWER ->entire pregnancy
Which of the following extraoral radiographs is used to evaluate impacted
teeth, large lesions and fractures of the mandible ? - ANSWER ->lateral jaw
projection
When taking in occlusal radiograph, the PSP packet should extend from the
patient's mouth by approximately .... - ANSWER ->1/8 - beyond apices and
1/8 to 1/4 in beyond incisal or occlusal edge
, The occlusal plane will appear diagonal in the radiograph when there is an -
ANSWER ->Incorrect placement of image receptor
What is the name of the process for the harmful effects of radiation? -
ANSWER ->Ionization
Using the ALARA concept, as a guideline for radiographs, include all of the
EXCEPT - ANSWER ->using a circular PID (using a rectangular reduces by 60-
70%, but can cause cone cutting)
Which of the following can help to protect patients from excess radiation
damage to tissues - ANSWER ->High kVP
Which of the following regulates the manufacturing in installation of x-ray
equipment - ANSWER ->Federal government
The position-indicating device (PID) shape that must effectively reduces
patient exposure to radiation ... - ANSWER -
>rectangular
Which of the following would you adjust to produce wave links with the
greatest penetrating power? - ANSWER ->kVp. (affects
QUALITY of beam)
Use of a thyroid collar is recommended for all of the following radiographic
exposures EXCEPT - ANSWER ->panoramic
Which of the following was established to address the education and
certification of operators of radiographic equipment - ANSWER ->Consumer-
Patient Radiation Health and
Safety Act
