When would you use the bisecting technique over the paralleling technique?

There are two types of techniques used for periapical radiographs: bisecting angle, and paralleling. The bisecting technique may have to be used for patients unable to accommodate the film positioning device used in the paralleling technique. These patients may include adults with low palatal vaults and children.

When would you use the bisecting technique?

The bisecting angle technique is used when the sensor cannot be placed parallel to the long axis of the tooth. The sensor is positioned at an angle behind the tooth in question. An imaginary line bisects the angle formed by the long axis of the tooth and the film.

What is an advantage to using the bisecting technique?

The advantage to using the bisecting technique. Decreased exposure time. A film holder is not needed. The proper direction of the central ray in the bisecting technique. 90 degrees to the imaginary bisector.

Which is better paralleling or bisecting angle technique?

The paralleling technique, when performed correctly, is superior to the bisecting angle technique because it produces an image with both linear and dimensional accuracy. The bisecting angle technique is accomplished by placing the receptor as close to the tooth as possible.

What is the advantage to paralleling technique?

The major advantage of the paralleling technique, when done correctly, is that the image formed on the film will have both linear and dimensional accuracy.

What is the major difference between the paralleling technique and the bisecting technique is image receptor?

When do we use paralleling techniques?

With this technique, the film is placed parallel to the long axis of a tooth, allowing the X-ray to be focused perpendicular to the long axis of the tooth. The patient is seated upright in the dental chair and should remove any removable dental appliances, glasses or jewelry that could interfere with the X-ray beam.

Why is the paralleling technique preferred in dentistry?

Every clinician or dental assistant must be able to take good quality periapical X-rays. The paralleling technique is considered to be the best way to take periapical X-rays and when used correctly, it should produce reliable images with minimal distortion.

What are the main ideas behind bisecting the angle technique?

The bisecting angle technique is accomplished by placing the receptor as close to the tooth as possible. The central ray of the x-ray beam should be directed perpendicular to an imaginary line that bisects or divides the angle formed by the long axis of the tooth and the plane of the image receptor.

What is the paralleling technique?

The paralleling technique is the most commonly used technique for exposing periapical and bitewing radiographs because it creates the most accurate representation of a tooth image. It refers to the receptor being positioned parallel to the full length (long axis) of the tooth being radiographed.

Which are advantages of the paralleling technique?

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