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what technique is used to locate the position of a tooth or object in the jaw?
the dental radiograph is a ________ picture of a ________ object
the radiograph depicts objects in a ______-inferior and ______-posterior relationships but it is limited on depicting _____-______ relationsiphs or the depth of an object
the purpose of the localization technique is to obtain what information?
localization can be used to locate: _____ bodies, ______ teeth, unerupted teeth, ______ roots, _____ positions, ______ stones, jaw ______, broken _____ and instruments, filling materials.
- foreign bodies
- impacted teeth
- retained roots
- root positions
- salivary stones
- jaw fractures
- broken needles
what are the two basic techniques used to localize objects?
the buccal object rule and the right angle technique
what governs the orientation of structure portrayed in two radiographs exposed at different angulations?
buccal object rule
how are the two films taken for the buccal object rule?
- First PA or BWX is exposed using proper technique and angulation
- Second PA or BWX is exposed after changing the direction of the beam and with a different horizontal or vertical angulation
what angulation is changed in the buccal object rule to see horizontal aligned images
vertical angulation is changed
what angulation is changed for the buccal object rule to see vertical aligned images?
horizontal angulation is changed
what is an example of a vertically aligned image?
if the object in the second object appears to have moved in the same direction as the shift in the PID where is the object located?
if you move the PID mesially and the object in question moves mesially on the dental radiograph then where does the object lie?
if the object in the second radiograph has moved in the opposite direct of the shift of the PID where is the object?
if the horizontal angulation is changed by shifting the PID distally and the object moves mesially where does the oject lie?
what is the mnemonic used for the buccal object rule and what does it stand for?
same=______ and opposite=______
what two films are taken with the right angle technique
- One PA taken at the proper technique
- One occlusal film at a right angle to the film
with the right angle technique the occlusal film shows the object in the ______-______ and ______-______ relationships
the right angle technique is primarily used for locating objects where?
in the mandible
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