Question 1

A patient may bite down on a sterilized cotton roll that is placed on the same side of the bite block as the teeth to provide stablization and add to patient comfort.

Accepted Answer

Placing a sterilized cotton roll on the same side of the bite block as the teeth can help provide stabilization and increase patient comfort during a dental procedure.

Question 2

The Dentsply Rinn XCP image receptor holder is designed for use with the paralleling technique.

Accepted Answer

The answer of The Dentsply Rinn XCP image receptor holder...

Question 3

The Dentsply Rinn Stabe and the Flow Dental SUPA image receptor holders designed for the paralleling technique do not have an external aiming device.

Accepted Answer

Both the Dentsply Rinn Stabe and the Flow Dental SUPA image receptor holders designed for the paralleling technique typically incorporate or are compatible with external aiming devices to ensure proper alignment and positioning of the X-ray beam.

Question 4

An image receptor holder with an external aiming device is more comfortable for the patient.

Accepted Answer

An image receptor holder with an external aiming device allows the radiographer to aim the x-ray beam more accurately, which reduces the number of retakes and radiation the patient is exposed to. This can make the imaging process more comfortable for the patient.

Question 5

Image receptor holders designed for use with the paralleling technique usually have a short bite block.<KT>

Accepted Answer

This is true. Image receptor holders designed for use with the paralleling technique typically have a short bite block that helps to stabilize the receptor and position it accurately in the mouth.

Question 6

Because of the supporting structures on the maxillary arch, to accomplish a parallel relationship between the image receptor and the long axes of teeth, the image receptor must be placed closer to the teeth.

Accepted Answer

In dental radiography, especially for the maxillary arch, the image receptor is often placed away from the teeth and toward the middle of the oral cavity to achieve parallelism with the long axes of the teeth, due to anatomical constraints and the need to avoid superimposition of structures.

Question 7

If using an image receptor holder with an external aiming device, the <KT>indicator ring attachment must be slid all the way down the metal arm of the device to be as close to the patient's skin as possible without touching the patient prior to the exposure.

Accepted Answer

The indicator ring attachment's position on the metal arm of the device is adjusted based on the specific dental procedure and the area being imaged, not necessarily to be as close to the patient's skin as possible.

Question 8

When using the paralleling technique, insufficient vertical angulation will result in loss of the image of the crowns.

Accepted Answer

Insufficient vertical angulation means that the X-ray beam is not directed perpendicular to the teeth, resulting in overlapping and distortion of the image. This can lead to loss of detail and visibility of the crowns.

Question 9

In the paralleling technique, the distance between the tooth and the image receptor is usually closer than ideal.

Accepted Answer

In the paralleling technique, the image receptor is placed away from the tooth and parallel to the long axis of the tooth, with the central ray of the x-ray beam directed perpendicularly to both the tooth and the image receptor, ensuring accurate representation without elongation or foreshortening.

Question 10

If an image receptor holder has an external aiming device, then the patient must be seated upright with the head straight.

Accepted Answer

The use of an external aiming device on an image receptor holder does not necessarily require the patient to be seated upright with the head straight. The positioning depends on the specific area being imaged and the dentist's or radiographer's requirements for optimal image quality.

Question 11

The use of the paralleling technique is ideal with adult patients with a small mouth or shallow palatal vault.

Accepted Answer

The paralleling technique can be challenging in patients with a small mouth or shallow palatal vault because it requires the film or digital sensor to be positioned parallel to the long axis of the tooth and away from the tooth, which might be difficult in such anatomical conditions.

Question 12

The paralleling technique is preferred over the bisecting technique.

Accepted Answer

The answer of The paralleling technique is preferred over the...

Question 13

When using an image receptor holder with an external aiming device, the patient's head does not need to be precisely positioned.

Accepted Answer

With an external aiming device, the image receptor holder can be positioned accurately without the need for precise patient head positioning.

Question 14

With the paralleling technique, the central ray is directed perpendicular to the long axes of the teeth and the plane of the image receptor.

Accepted Answer

The paralleling technique uses a parallel relationship between the plane of the image receptor and the tooth, with the central rays of the x-ray beam directed at a right angle to both for a more accurate image.

Question 15

The paralleling technique does not meet the shadow-casting principle that requires placement of the image receptor close to the teeth of interest.

Accepted Answer

The paralleling technique involves placing the image receptor further away from the teeth and does not meet the shadow-casting principle that requires the receptor to be close to the teeth of interest. The bisecting angle technique meets the shadow-casting principle by positioning the image receptor as close as possible to the teeth of interest.

Question 16

An advantage of the paralleling technique is that it produces accurate radiographic images with a minimal amount of superimposition of adjacent structures.

Accepted Answer

The answer of An advantage of the paralleling technique is...

Question 17

Image receptors with an external aiming device eliminate radiographic technique errors.

Accepted Answer

Image receptors with an external aiming device can reduce some errors related to alignment and positioning but do not eliminate all radiographic technique errors, as there are other factors involved such as exposure settings and patient movement.

Question 18

An image receptor holder with an external aiming device can make radiographic errors less likely.

Accepted Answer

An image receptor holder with an external aiming device can help reduce radiographic errors by ensuring proper positioning and alignment of the image receptor with the X-ray beam, leading to more accurate and consistent images. This is especially important in areas where proper positioning can be challenging, such as the posterior teeth or periapical regions.

Question 19

Correct horizontal angulation is determined by positioning the image receptor parallel to the embrasure of two predetermined teeth.

Accepted Answer

Correct horizontal angulation is determined by positioning the image receptor parallel to the embrasure of two teeth. This ensures that the image will be accurately captured on the film or digital sensor.

Question 20

To compensate for the increased object-image receptor distance needed to achieve parallelism, the target-surface receptor distance should be increased.

Accepted Answer

When increasing the object-image receptor distance to achieve parallelism, the distance between the target or patient and the receptor should also be increased to maintain image sharpness and minimize magnification. This is known as the source-to-image distance (SID) and is part of the inverse square law of radiation. Therefore, the statement is true.

Quiz 14: The Periapical Examinationbisecting Technique