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Chapter 41-Intraoral imaging Flashcards | StudBud
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Chapter 41-Intraoral imaging
Chapter 41-Intraoral imaging
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14th edition
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Answers
1
The technique which is most accurate/least radiation to the patient is..
Bisecting-angle technique
Short cone technique
Bisecting technique
Paralleling technique
2
What size of film is preferred for anterior teeth with the paralleling technique?
#2
#3
#4
#1
3
To minimize image distortion, the ___
Film must bisect the x-ray beam
Film must be perpendicular to the long axis of the tooth
Film must be parallel to the long axis of the tooth
none of the above
4
Incorrect horizontal angulation of the PID results in
Elongation
foreshortening
Overlapped contact areas
Blurred Images
5
When taking radiographs using film, the white side of the film is always placed
away from the teeth
either away or towards the teeth
towards the teeth
away from x-ray beam
6
A FMX on an adult consists of _____ images.
10-20
18
16-18
18-20
7
A PA shows the tooth from the occlusal/incisal edge to about _____ mm beyond the apex
0-1
3-4
1-2
2-3
8
The American Dental Association recommends that films be mounted
As if the viewer is standing on the patient's tongue
so the patient's left side is on the viewer's left side
With the concave portion of the dot facing up.
According to the labial mounting method
9
When taking periapical x-rays, the patient’s head is _____ for maxillary films and _____ for the mandibular arch
tilted back slightly; upright
upright; upright
tilted back slightly; tilted back slightly
upright; tilted back slightly
10
Basic principles of the bitewing technique include the
blue holder is used to stabilize the film sensor in the patient’s mouth.
film sensor is placed parallel to the crowns of the teeth
angulation of the PID is not a factor in the bitewing technique
idk what to put here, it's not green
11
One reason the bisecting technique is used is
Cause it makes you look cooler 8)
It provides a more accurate image
It's what's recommended by the ADA
When pt's have small mouths or a low palatal vault
12
Angulation of the PID is critical to ensure the central ray is perpendicular to the bisector line in which techniques?
Periapical
Parallel
Bisecting
Long-cone
13
For the patient with a hypersensitive gag reflex, the teeth that should be exposed last are
maxillary molars
mandibular anteriors
mandibular molars
maxillary anteriors
14
In the paralleling technique, the central ray of the x-ray beam must be ___ to the film sensor &long axis of the tooth
Perpendicular
parallel
interproximal
Intersection
15
If you use a #2 for anterior x-rays you'll take ___ pa's total
eight
four
seven
six
16
One technique for the management of the patient with a gag reflex is to
tell them to suck it up.
Slide the film along the palate slowly
position the film slowly
Use extraoral images
17
alignment of the x-ray beam in the horizontal/vertical planes of the teeth & the film sensor placement is referred to as
Angulation
paralleling
interproximal
perpendicular
18
If a patient does not have use of his upper limbs and a film sensor holder can not be used you should..
do none of the above.
Hold the x-ray in their mouth and ask the caregiver to press the button
hold the film sensor in the patient’s mouth while you press the exposure
ask the patient’s caregiver to assist in holding the film sensor.
19
An anterior set of images includes
incisors and molars
canines and premolars
premolars and molars
canines and incisors
20
When taking periapical images, it is best to start with anterior images because
Always work front to back
The patient can hold the image receptor
Patient's are less likely to gag with anterior images
They are easier
21
To correct an elongated image on an x-ray view, the vertical angulation needs to be
flattened
lowered
increased
decreased
22
The bisecting-angle instrument (BAI) uses _____ to determine the correct PID angulation
indicator arms
bite blocks
aiming rings
dental dams
23
The bitewing view shows the
Crowns and interproximal areas of the upper and lower teeth
Hamular notch distal to the maxillary third molar
mandibular canal
Whole tooth crown to the apex and surrounding bone
24
An intraoral full-mouth survey contains
bitewing images but not periapical images.
both periapical and bitewing images
neither periapical nor bitewing images
periapical images but not bitewing images.
25
The exposure sequence for the posterior teeth should begin with the _____ right _____ view.
maxillary; molar
mandibular; premolar
mandibular; molar
maxillary; premolar
26
The dental assistant exposing films should start with..
lower teeth.
anterior teeth
upper teeth
posterior teeth
27
Insufficient vertical angulation can result in an image that is
foreshortened
Distorted
Horizontally overlapped
Elongated
28
Occlusal radiographs can be used for
checking for infections at the apex of the teeth.
checking bone levels between teeth
detecting decay
locating retained roots of extracted teeth
29
When taking a premolar bitewing image, the anterior edge of the film sensor should be placed
on the distal half of the canine
on the distal half of the lateral
On the mesial of the second premolar
in the middle of the first premolar
30
The major difference between the paralleling technique and the bisecting technique is film sensor
size
Speed
Position
None of the above
31
If the central ray of the x-ray beam is not centered on the sensor, it will result in an error called ___
Herringbone image
blurred image
Cone cut
Elongation
32
When using an x-ray sensor, it is important to always
place a cotton roll between the sensor and the teeth being x-rayed
place the sensor parallel to the incisal or occlusal edge of the teeth
use the bisecting technique
place the sensor directly against the teeth
33
The American Academy of Oral and Maxillofacial Radiology recommends using the paralleling technique because
it provides the most accurate image with the least amount of radiation.
They are less likely to gag
it is an easier technique to use.
they said so
34
When a size #2 film sensor is used, the anterior films are in the__ position & the posterior films are in the _ position
Vertical; vertical
Vertical; horizontal
Horizontal; vertical
horizontal; horizontal
35
Which film holder is used to take x-rays during and endodontic procedure?
Stable bite block
EndoRay
EeZee-Grip
XCP
36
Radiographic images on an edentulous patient might be required for detection of
interproximal caries
a periapical abscess
retained root tips, impacted teeth, lesions.
defective margins of crowns.
37
The molar bitewing image should be centered over the
first molar
second molar
Second premolar
third molar
38
What is the usual number of posterior periapical film sensor images taken in the parallel technique
8
4
2
6
39
If you use a size 1 sensor for anterior images, you'll take _____ maxillary and _____ mandibular images
three; four
six; four
four; three
fiv e;four
40
The number of x-ray views that makes a patient’s full-mouth series depends on the:
frequency of the insurance benefit
history of interproximal caries
number of teeth present in the patient’s mouth
presence of active periodontitis
41
In adults, a size #___ intraoral film is used for the occlusal technique
#1
#2
#4
#3
42
The number of bitewing films needed is based on the curvature of the arch and the
number or periapical images taken
size of the patient's mouth
age of the patient
number of teeth present in the posterior areas
43
The horizontal bitewing is best for detecting...
An abscess
Boneloss
Unerupted third molar
Interproximal caries