chapter 41 multiple choice
what vertical angulation should be used for bitewing images?
+10 degrees.
what film size is recommended for a pediatric patient with all primary dentition?
0.
what film size is used in the occlusal technique for an adult?
4.
what type of film holder can be used in the bisecting angle technique?
BAI, EeZee Grip, and Stabe.
when you are exposing films for a pediatric patient, what analogy can you use to describe the tubehead?
camera.
in the bisecting angle technique, how is the image receptor placed in relation to the teeth?
close to the teeth.
which of the following can occur when the vertical angulation is incorrect?
elongation and foreshortening.
what changes must be made in the exposure factors when dental images from a pediatric patient are exposed?
exposure factors must be reduced.
when radiographs are mounted, where is the dot placed?
facing up.
why is it important for the dental assistant to recognize normal anatomic landmarks?
for mounting of x-ray films.
where would you begin making exposures for a patient with a severe gag reflex?
mandibular anterior.
which exposure should be the first for the posterior regions?
mandibular premolar.
when you are exposing images, in which area of the mouth should you begin?
maxillary anterior.
what is a good diagnostic quality image for endodontics?
one that allows you to see 5 mm beyond the apex.
what error occurs when the horizontal angulation is incorrect?
overlapping.
what technique is used for exposing dental images?
parallel and bisecting.
which exposure technique do the American Academy of Oral and Maxillofacial Radiology and then American Association of Dental Schools recommend?
parallel.
why is an exposure sequence important?
so areas of the mouth are not missed or retaken.
why is it not recommended to have the patient hold the image receptor during exposure?
the patient receives unnecessary radiation.
why is it important to avoid retakes?
to avoid unnecessary radiation exposure.
when are occlusal radiographs indicated?
to show a wide view of the arch.
what is the purpose of bitewing images?
to view the interproximal surfaces.
for partially edentulous patients, how can you modify the technique for using a bite-block.
use a cotton roll.
