Exposure Sequence

Question 1

True or False: When exposing periapical receptors with the paralleling technique, ALWAYS begin with the anterior teeth. If so, why?

Answer 1

True

1. receptor size1 is less uncomfortable, easier for patient to tolerate
2. More tolerable anterior placements allow the patient to become accustomed to the beam alignment device.
3. anterior placement are less likely to cause the patient to gag.

Question 2

With size 1, what is the total number of anterior placements that may be used in the paralleling technique?

Answer 2

7 anterior placements: 4 maxillary and 3 mandibular

Question 3

True or False: in each quadrant, ALWAYS expose the premolar receptor first and then the molar receptor. If so why?

Answer 3

True

1. Premolar placement is easier for the patient to tolerate
2. Premolar placement is less likely to evoke gag reflex.

Question 4

How many posterior placements may be used in the paralleling technique?

Answer 4

8 posterior placements: 4 maxillary and 4 mandibular.