TEACH Lesson Plan
IANNUCCI AND HOWERTON: Dental Radiography: Principles and Techniques, 5th Edition
8 Dental X-Ray Image Characteristics
CHAPTER REVIEW ANSWER KEY
Multiple Choice
1. b
Rationale: Radiolucent is the term that describes the dark or black portions of a dental image.
8. a
Rationale: Increasing the exposure time produces more x-rays and exposes the image; this will
increase the density of the image.
Chapter 8: Dental X-Ray Image Characteristics 2
TEACH Lesson Plan
IANNUCCI AND HOWERTON: Dental Radiography: Principles and Techniques, 5th Edition
Multiple Choice (Continued)
14. a
Rationale: A dental image that does not have very dark and very light areas but instead has many
shades of gray is said to have low contrast. The diagram illustrating many shades of gray refers to
19. d
Rationale: A compromise between short-scale and long-scale contrast is preferred in dental imaging
to produce a quality dental image. This is one in which diagnostic information is provided and the
images reveal proper density and contrast.
Chapter 8: Dental X-Ray Image Characteristics 3
TEACH Lesson Plan
IANNUCCI AND HOWERTON: Dental Radiography: Principles and Techniques, 5th Edition
Fill in the Blank
25. increase
31. increase