.
A reversed smile line observed on a panoramic image is likely
due to: Correct Answer Position of the patient's chin is too
high
All of the following are accurate statements regarding hand
hygiene under dental gloves EXCEPT: Correct Answer
Petroleum-based lotions are found to be the most beneficial for
dental radiographers to use under gloves, allowing for the lotion
to have the proper contact time with the skin.
During panoramic positioning of the patient, if the patient's chin
is positioned too low, the following will be seen on the
processed radiograph: Correct Answer the absence of the
patient's condyles in the correct anatomical position.
Identify the density and contrast of an image receptor produced
using a high kilovolt or kV setting: Correct Answer Increased
density; low contrast. (inverse relationship)
If a dental x-ray tube head has a faulty seal, the following will
result: Correct Answer leakage of radiation.
If the kilovolt peak (kVp) setting is lowered, a longer exposure
time will be necessary to produce an image with ______
contrast. Correct Answer high
In order to prevent cross contamination from a used sensor
holder, which one of the following is NOT indicated Correct
, Answer The sensor holder can forgo undergoing precleaning
practices including hand scrubbing, automated washing, or the
use of an ultrasonic machine if the dental radiographer does not
see any debris on the item.
The difference between acute radiation exposure and chronic
radiation exposure is: Correct Answer the amount of radiation
received and the time frame in which it is absorbed.
The maximum permissible dose of radiation exposure allowed to
a dental auxiliary in a 13-week consecutive period is: Correct
Answer 3 Roentgens.
Tomography can be best described as: Correct Answer the
process of imaging a desired structure while blurring of other
areas.
What is the most likely reason for a dental radiographer to
receive a reading on their personal radiation monitoring device?
Correct Answer Failure of the dental radiographer in following
the rules of working with radiation, to include not wearing the
badge outside of the clinic/practice.
When describing the long axis of a tooth when referring to the
paralleling technique, which of the following statements is
TRUE? Correct Answer The long axis of the tooth divides it
into equal halves.
When is it acceptable to sterilize an XCP device without the use
of packaging? Correct Answer When the XCP device will be