TEACH Lesson Plan
IANNUCCI AND HOWERTON: Dental Radiography: Principles and Techniques, 5th Edition
Module 5 Part 2: Teaching Experiences
with DXTTR
CLINICAL LABORATORY ACTIVITY 5-1 WORKSHEET
Questions for Group Discussion
1. In what situations would the bisecting technique be preferred over the paralleling technique?
Some clinical situations may occur in which the bisecting technique is preferred over the
2. What factors determine the horizontal and vertical angulations chosen for each projection?
Correct horizontal angulation is seen when the central ray is directed perpendicular to the
bisector.
3. What was easy about using this intraoral radiographic technique? Why?
4. What was difficult about using this intraoral radiographic technique? Why?
5. Years ago, this technique was accomplished with the use of the patient’s finger holding the
receptor in place. Why is this technique not recommended today?
CLINICAL LABORATORY ACTIVITY 5-2 WORKSHEET
Questions for Group Discussion
1. What clinical situations may make the posterior exposures more difficult for the patient?
Some of the situations in which posterior exposures may be difficult for the patient include a
2. What clinical situations may make the posterior exposures more difficult for the operator?
3. Why is the premolar placement always exposed before the molar placement?
It is recommended to place the premolar receptor before the exposure of the molar receptor in all
4. What modifications would be made with the receptor placement if the patient were missing
several posterior teeth?
5. Which exposures were easier, maxillary posterior or mandibular posterior? Why?