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Question 1

List three ways to maximize image sharpness

Answer 1

1. Small Focal Spot
2. Large source-to-object distance (longer cones)
3. Small object-to-receptor distance

Question 2

List two ways to minimize magnification

Answer 2

1. Large source-to-object distance (longer cones)
2. Small object-to-receptor distance

Question 3

List two ways to minimize shape distortion

Answer 3

1. Object and receptor should be parallel
2. Beam should be perpendicular to object and receptor

Question 4

What cones should you use for paralleling technique? Bisecting Angle Technique? Which is preferred?

Answer 4

Long cone
Long or short cone
Paralleling technique preferred

Question 5

What is the bisecting angle technique?

Answer 5

Directing the beam perpendicular to the bisecting line between the receptor and plane of tooth

Question 6

How does foreshortening occur? Elongation?

Answer 6

Tooth not parallel, beam perpendicular to receptor
Tooth not parallel, beam is directed perpendicular to tooth

Question 7

Why do we have to compensate for the maxillary bitewing radiographs? How do we do so?

Answer 7

Curve of Wilson
(+) ~5-10 degrees