PRACTICE QUESTIONS AND
ANSWERS
By not directing the central ray to cover the film, you will cause____ - ANSWER-a
cone cut.
To correct an elongared film you must.... - ANSWER-increase the vertical angulation.
An FMX should be taken... - ANSWER-Whenever the dentist feels its necessary.
To help prevent cross contamination with x-rays, you should use... - ANSWER-film
barriers.
Where is the lead foil located? - ANSWER-Between the film and the tongue.
What causes overlapping? - ANSWER-incorrect horizontal angulation.
What is the most radiopaque material used in the mouth? - ANSWER-Amalgam
X-rays travel at what speed? - ANSWER-186,000 miles per second.
What is cross-contamination? - ANSWER-The spreading of microorganisms from
one person to another.
Which film size is recommended for anterior use, especially if the paralleling
technique is used? - ANSWER-Size 1
What size film is recommended for a childs periapical or bitewing? - ANSWER-Size
0
the main advantage of using fast film is... - ANSWER-Less exposure to the patient
the fastest film speed is... - ANSWER-Film Speed F
Extraoral films are used in... - ANSWER-A) Orthodontics
B) Locating Tumors
C) Locating the position of impacted teeth.
A bitewing is also known as... - ANSWER-Interproximal Radiograph
Periapical film is used primarily to exmaine the region around the apex of the root of
a tooth. Periapical films also... - ANSWER-A) Show the shape, length, and number
of roots.
B) show the condition of surrounding and supporting structures.
C) comes in various sizes.(answer)