(Periapical Technique Errors) Receptor Placement Problems

Question 1

What is a correct receptor placement image show?

Answer 1

Shows the entire tooth, including the apex and surrounding structures.

Question 2

What does an incorrect receptor placement image show?

Answer 2

inadequate coverage of the apical regions, or a dropped receptor corner.

Question 3

Absence of Apical Structures

Answer 3

Appearance: no apices are seen
Cause: The receptor was not positioned in the patient’s mouth to cover the apical regions of teeth. This error occurs with both paralleling and bisecting technique.
Correction: Make certain that no more than one eighth of an inch of the receptor edge extends beyond the incisal- occlusal surfaces of teeth.

Question 4

Dropped Receptor Corner

Answer 4

Appearance: the occlusal plane appears tipped or tilted
Cause: The edge of the receptor was not placed parallel to the incisal- occlusal surfaces of teeth.
Correction: Make certain that the edge of the receptor is placed parallel to the incisal-occlusal surfaces of teeth as the patient bites is or her teeth together.