Position- Indicating Device Angulation Flashcards
1
Q
What is horizontal angulation?
A
Refers to the positioning of the central ray in a horizontal, or side-to-side plane.
2
Q
What is the correct horizontal angulation?
A
The central ray is directed perpendicular to the curvature of the arch and through the contact areas of teeth.
3
Q
What is the incorrect horizontal angulation?
A
Results in overlapped (“unopened”) contact areas.
4
Q
What is vertical angulation?
A
Refers to the positioning of the PID in a vertical, or up-and-down, plane.
5
Q
What is the correct vertical angulation?
A
When a bite-wing tab is used, a vertical angulation of +10 degrees is recommended for the bite-wing image.
6
Q
What is the incorrect vertical angulation?
A
Exposure of a bite-wing results in a distorted image.
