TEACH Lesson Plan
IANNUCCI AND HOWERTON: Dental Radiography: Principles and Techniques, 5th Edition
23 Extraoral Imaging
CHAPTER REVIEW ANSWER KEY
Essay
Questions 1-8: Because of the nature of these questions, correct answers are subject to the discretion of
individual instructors.
Multiple Choice
9. c
Rationales:
a. The lateral jaw projection is used to evaluate impacted teeth, fractures, or lesions in the body of
the mandible.
b. The reverse Towne projection is used to identify fractures of the condylar neck and ramus area.
d. The submentovertex projection is used to identify the position of the condyles and base of the
skull, and evaluate fractures of the zygomatic arch.
c. The Waters projection is used to evaluate the area of the maxillary sinus.
d. The submentovertex projection is used to identify the position of the condyles and base of the
skull, and evaluate fractures of the zygomatic arch.
Chapter 23: Extraoral Imaging 2
TEACH Lesson Plan
IANNUCCI AND HOWERTON: Dental Radiography: Principles and Techniques, 5th Edition
Multiple Choice (Continued)
14. c
Rationales: