DEN 130 1 H - Dental Radiology- 19

Flashcards for reviewing key concepts, terminology, and principles related to the paralleling technique in radiography.

What is the paralleling technique also known as?

Extension cone paralleling technique, right-angle technique, long-cone technique.

What is the basic principle of the paralleling technique?

The receptor is placed parallel to the long axis of the tooth, and the central ray is directed perpendicular to the receptor and the long axis of the tooth.

Why is a beam alignment device necessary in the paralleling technique?

It keeps the receptor parallel with the long axis of the tooth during exposure.

List some commercially available beam alignment devices used in the paralleling technique.

Rinn XCP Extension Cone Paralleling System, Rinn XCP-ORA, Rinn XCP-DS FIT, Rinn Flip-Ray System, Rinn Snap-A-Ray Holder.

What are the two sizes of receptors used in the paralleling technique, and where are they typically placed?

Size 1 receptor is used in the anterior region, and size 2 receptor is used in the posterior region.

What are the key factors for proper receptor placement in the paralleling technique?

Receptor placement, receptor position, vertical angulation, horizontal angulation, film exposure.

How does object-receptor distance affect the image in the paralleling technique?

It must be increased to keep the receptor parallel to the long axis of the tooth.

How can modifications be made for patients with a shallow palate in the paralleling technique?

Use cotton rolls and increase vertical angulation by 5 to 15 degrees.

What is a disadvantage of the paralleling technique?

Receptor placement may be difficult, and the beam alignment device may cause discomfort.

Summarize the advantages of the paralleling technique.

Accuracy without distortion, simplicity in angulation, and valid duplication for comparison of images.