DH 1401 Ch. 21 Bitewing technique Quiz

What is another name for the paralleling technique?

• Extension Cone Paralleling Technique

• Right Angle Technique

• Long Cone Technique

• All of the above

What is the purpose of a beam alignment device in the paralleling technique?

• To keep the receptor parallel with the long axis of the tooth

• To direct the central ray of the x-ray beam perpendicular to the film and the long axis of the tooth

• To ensure that only the most parallel rays will be directed at the tooth

• All of the above

Which size receptor is used in the anterior region for the paralleling technique?

• Size 1

• Size 2

• Size 3

• Size 4

What is the recommended exposure sequence for 15 periapical receptor placements using the paralleling technique?

• 7 anterior placements and 8 posterior placements

• 8 anterior placements and 7 posterior placements

• 15 anterior placements

• 15 posterior placements

What modifications are made in the paralleling technique for a patient with a shallow palate?

• Using cotton rolls on each side of the bite-block

• Increasing the vertical angulation by 5 to 15 degrees

• Placing the receptor on the far side of the maxillary torus

• Placing the receptor under the tongue in the mandibular premolar region

What is an advantage of the paralleling technique?

• The image is free of distortion

• Accuracy in determining horizontal and vertical angulation

• Allows for easy comparison of serial images

• All of the above

What is a disadvantage of the paralleling technique?

• Receptor placement may be difficult

• Beam alignment device may cause discomfort

• Requires determining horizontal and vertical angulation

• All of the above

What is the purpose of the central ray in the paralleling technique?

• To keep the receptor parallel with the long axis of the tooth

• To direct the central ray of the x-ray beam perpendicular to the film and the long axis of the tooth

• To ensure that only the most parallel rays will be directed at the tooth

• To eliminate chances of dimensional distortion

What is the purpose of the paralleling technique?

• To present basic concepts of dental radiography

• To describe patient preparation and equipment preparation

• To explain the principles and techniques of the paralleling technique

• All of the above