Dental Radiology QUIZ

Question 1

A good dental radiograph includes all of the root of the target tooth and…
1. the tooth that is caudal
2. all of the crown
3. 2mm margin of alveolar bone
4. an oral landmark for orientation

Answer 1

3. 2mm margin of alveolar bone

Question 2

T/F: Tooth evaluation with a rotary anode machine/skull technique is as good as dental films/dental x-ray machine.

Answer 2

False

Question 3

T/F: The film/sensor must always lie parallel to the target tooth to achieve a good dental image.

Answer 3

False

Question 3

T/F: There is no indication to take full mouth dental radiographs if there is no gingivitis on oral exam.

Answer 3

False

Question 4

When positioning a dental “sensor” intraoral, the cord is placed ___.
1. rostral
2. caudal
3. to patient’s left
4. to patient’s right

Answer 4

1. rostral

Question 5

What does the acronym “PID” stand for?
1. Puppy Indicating Device
2. Patient Intercepting Distance
3. Patient Indicating Distance
4. Position Indicating Device

Answer 5

4. POSITION Indicating Device

Question 5

Why is it necessary to utilize the “Bisecting Angle” Technique in dental radiography?

Answer 5

It is used since it is not possible to get the sensor parallel with all the teeth in the patient’s mouth. This method allows us to capture the tooth root without too much artifact/elongation.

• This technique is used in areas where the sensor parallel to the root technique is impossible due to poor access, making the angle between tooth and film more than 15 degrees.
• Using Bisecting Angle Technique, a truer image of the tooth length and width is obtained (minimal distortion).

Question 5

In dental radiography, what is a “pulse?”
a. 1/60 or .016 of a second
b. “an exposure” of any time duration
c. 1/10 or 0.1 of a second
d. 1/100 or .01 of a second

Answer 5

a. 1/60 or .016 of a second

Question 6

Of the three dental film/sensor sizes, “0,” “2,” or “4,” which is the largest?
a. 0
b. 4
c. 2
d. it depends on the manufacturer

Answer 6

b. 4

Question 7

This image is showing which teeth of a dog left side? (“a” is rostral, image is “hung” correctly)
a. 407, 408, 410, 411
b. 707, 708, 709, 710, 711
c. 307, 308, 309, 310, 311
d. 807, 808, 809, 810, 811

Answer 7

c. 307, 308, 309, 310, 311

Question 8

When utilizing the Simplified “ABCD” technique for dental imaging, what should be the position of the hard palate (roof of mouth)? what positioning aid is utilized to obtain this position?

a. What position?
b. Positioning aid?

Answer 8

Position:
- Hard Palate must be parallel to the table in either dorsal or sternal recumbency.
(Perpendicular to the table in lateral recumbency).

Aid:
- A rigid box or yoga block is placed under the chin to achieve parallel to the table in sternal position.
(Towels only under the head are not reliable for parallel positioning during radiography. Rigid block can be removed when radiographs complete).

Question 9

List two situations in which the veterinary team would know the need for imaging a specific tooth is indicated.

(Provide two examples of situations where the veterinary team would need to take dental radiographs aside from routine imaging.)

Answer 9

1. Fractured tooth
2. Discolored tooth

More:
3. Swelling of soft tissues in the area (i.e. ventral to the eye)
4. Animal exhibits oral pain in the area
5. Tooth mobility
6. Missing tooth
7. Discolored tooth
8. Deep gingival sulcus present
9. Root furcation evident
10. Tooth fracture seen

Question 10

List two general reasons that dental radiographs are needed, in addition to diagnosing disease. (Do not give a “diagnosing disease answer”)

Answer 10

1. To monitor progression of disease or response of therapy
2. Legal record
3. Client education of care needs or why an extraction is indicated