Dental Radiography Principles and Techniques - 1 History

1. Radiation is defined as

• a form of energy carried by waves or streams of particles.

• a beam of energy that has the power to penetrate substances and record image shadows on a receptor.

• a high-energy radiation produced by the collision of a beam of electrons with a metal target in an x-ray tube.

• a branch of medicine that deals with the use of x-rays.

A radiograph is defined as

• a beam of energy that has the power to penetrate substances and record image shadows on a receptor.

• a picture on film produced by the passage of x-rays through an object or body.

• the art and science of making radiographs by the exposure of an image receptor to x-rays.

• a form of energy carried by waves or a stream of particles.

Your patient asked you why dental images are important. Which of the following is the correct response?

• An oral examination with dental images limits the practitioner to what is seen clinically.

• All dental diseases and conditions produce clinical signs and symptoms

• Dental images are not a necessary component of comprehensive patient care.

• Many dental diseases are typically discovered only through the use of dental images.

The x-ray was discovered by

• Heinrich Geissler

• Wilhelm Roentgen

• Johann Hittorf

• William Crookes

Who exposed the first dental radiograph in the United States using a live person?

• Otto Walkoff

• Wilhelm Roentgen

• Edmund Kells

• Weston Price

Current fast radiographic film requires ____ % less exposure time than the initial exposure times used in 1920.

• 33

• 98

• 73

• 2

Who modified the paralleling technique with the introduction of the long-cone technique?

• C. Edmund Kells

• Franklin W. McCormack

• F. Gordon Fitzgerald

• Howard Riley Raper

Which of the following is an advantage of digital imaging?

• Increased patient radiation exposure

• Increased patient comfort

• Increased speed for viewing images

• Increased chemical usage

Which discovery was the precursor to the discovery of x-rays?

• Beta particles

• Alpha particles

• Cathode rays

• Radioactive materials

Which of the following would you place in the patient’s mouth in order to take dental x-rays?

• Image

• Image receptor

• Radiograph

• Dental radiograph