Question 1

Which receptor is placed outside of the mouth?&#10;A) Extraoral&#10;B) Intraoral&#10;C) Periapical&#10;D) Bite-wing

Accepted Answer

Dental imaging examinations may involve either intraoral projections (placed inside the mouth) or extraoral projections (placed outside the mouth).

Question 2

Three types of intraoral imaging examinations that are used in dentistry are _________ examinations.&#10;A) mandibular, maxillary, panoramic.&#10;B) oral, intraoral, and extraoral.&#10;C) periapical, interproximal, and occlusal.&#10;D) paralleling, bisecting, and FMX.

Accepted Answer

Three types of intraoral imaging examinations that are used in dentistry are periapical, interproximal, and occlusal.

Question 3

Dental images must display the least amount of __________ possible.&#10;A) distortion&#10;B) color&#10;C) biting&#10;D) paralleling

Accepted Answer

Dental images must display the least amount of distortion possible; images must be of the same shape and size as the object being imaged.

Question 4

The surfaces in the radiography operatory that are likely to become contaminated when exposing
X-rays are the:

A) tubehead and PID.
B) lead apron and chair controls.
C) counter surfaces and exposure button.
D) All of the above are correct.

Accepted Answer

Examples of surfaces that must be covered or disinfected include the following:
X-ray machine: The tubehead, PID, control panel, and exposure button must all be covered or disinfected.
Dental chair: The headrest as well as the headrest adjustment and chair adjustment controls must be covered or disinfected.
Work area: The area where x-ray supplies (e.g., film, sensors) are placed during exposure must be covered or disinfected.
Lead apron: If contaminated, the lead apron must be wiped with a disinfectant between patients.

Question 5

The major source of cross-contamination during radiographic procedures is the:&#10;A) lead apron.&#10;B) PID.&#10;C) exposed film packet.&#10;D) beam alignment device.

Accepted Answer

Commercially available plastic barrier envelopes that fit over intraoral films can be used to protect the
film packets from saliva and minimize contamination after exposure of the film.

Question 6

When transporting exposed films to the darkroom:&#10;A) they should be placed in an aseptic container.&#10;B) gloves should be removed and hands washed.&#10;C) the area should be cleaned and the patient dismissed.&#10;D) All of the above are correct.

Accepted Answer

When transporting exposed films to the darkroom they should be placed in an aseptic container, gloves should be removed and hands washed, and the area should be cleaned and the patient dismissed.

Question 7

Infection control guidelines are made by the:&#10;A) CDC.&#10;B) ADA.&#10;C) FDA.&#10;D) EPA.

Accepted Answer

The CDC released a publication entitled Guidelines for Infection Control in Dental Health Care Settings (2003), which provides infection control practices for dentistry.

Question 8

Recommendations concerning gloves would fall under which of the following categories of infection- control practices that directly relate to dental radiography?&#10;A) Protective attire and barrier techniques&#10;B) Handwashing and care of hands&#10;C) Sterilization or disinfection of instruments&#10;D) Cleaning and disinfection of dental unit and environmental surfaces

Accepted Answer

Personal protective equipment includes protective attire, gloves, mask, and eyewear.

Question 9

Instruments or devices that do not come in contact with mucous membranes are considered _______ instruments.&#10;A) dry&#10;B) hygienic&#10;C) high-level &#10;D) noncritical

Accepted Answer

Instruments or devices that do not come in contact with mucous membranes are considered
noncritical.

Deck 11: Introduction to Dental Imaging Examinations, Infection Control and the Dental Radiographer