Deck 41: Intraoral Imaging

Question 1

To minimize image distortion,the:

A)film must be positioned perpendicular to the long axis of the tooth.
B)film must be positioned parallel to the long axis of the tooth.
C)central ray of the x-ray beam must be directed parallel to the film.
D)central ray of the x-ray beam must be directed parallel to the long axis of the tooth.

Answer 1

film must be positioned parallel to the long axis of the tooth.

Question 2

The technique is recommended by the American Academy of Oral and Maxillofacial Radiology and the American Association of Dental Schools,because it provides the most accurate image with the least amount of radiation exposure to the patient is the _____ technique:

A)bisecting-angle
B)paralleling
C)bitewing survey
D)short-cone

Answer 2

paralleling

Question 3

The bitewing view shows the:

A)crowns and interproximal areas of the maxillary and mandibular teeth.
B)whole tooth crown to apex and surrounding bone.
C)crestal bone.
D)Both a and c are correct.

Answer 3

Both a and c are correct.

Question 4

Radiographic images on an edentulous patient might be required for:

A)detection of interproximal caries.
B)identifying objects embedded in the bone.
C)detecting retained root tips, impacted teeth, and lesions.
D)both b and c

Question 5

According to the guidelines for film placement,which of the following is true?

A)The colored side of the film always faces the teeth.
B)Anterior films are always placed horizontally.
C)Posterior periapical films are always placed vertically.
D)The identification dot on the film is always placed in the slot of the film holder.

Question 6

Because of the curvature of the arch,a total of _____ bitewing views are taken on an adult patient.

A)two
B)four
C)six
D)eight

Question 7

Incorrect horizontal angulation of the PID results in:

A)elongation.
B)foreshortening.
C)blurred images.
D)overlapped contact areas.

Question 8

An intraoral full-mouth survey on an adult consists of _____ images.

A)18 to 20
B)four
C)10 periapical and 2 bitewing
D)four anterior images and eight posterior

Question 9

What size film sensor is used for the anterior region of the mouth?

A)#1
B)#2
C)#3
D)Both a and b

Question 10

When using a #2 film sensor for anterior views using the paralleling technique,the number of anterior images taken is:

A)four.
B)six.
C)seven.
D)eight.

Question 11

If the patient is in a wheelchair,does not have the use of his or her upper limbs,and a film sensor holder cannot be used to stabilize the film sensor,you should:

A)ask the patient's caregiver to assist in holding the film sensor.
B)hold the film sensor in the patient's mouth while you press the exposure button.
C)hold the film sensor in the patient's mouth and ask the caregiver to press the exposure button.
D)do none of the above.

Question 12

The dental assistant exposing a periapical film sensor using the paralleling technique should always start with the:

A)anterior teeth.
B)molars.
C)upper teeth.
D)lower teeth.

Question 13

Which technique can be used in situations such as a small mouth,shallow palate,or the presence of tori?

A)Paralleling technique
B)Bitewing technique
C)Bisecting technique
D)Long-cone technique

Question 14

Incorrect vertical angulation can result in an image that is:

A)elongated.
B)foreshortened.
C)overlapped.
D)both a and b

Question 15

In adults,a size #___ intraoral film is used for the occlusal technique.

A)0
B)1
C)2
D)4

Question 16

Angulation of the PID is critical to ensure that the central ray is perpendicular to the bisector line in which of the following techniques?

A)Long-cone
B)Bisecting
C)Bitewing
D)Both b and c

Question 17

A periapical view shows the tooth from the occlusal surface or incisal edge to the:

A)crest of alveolar bone.
B)furcation.
C)apex of the root.
D)approximately 2 to 3 mm beyond the apex.

Question 18

The exposure sequence for the posterior teeth should begin with the _____ right _____ view.

A)maxillary; premolar
B)maxillary; molar
C)mandibular; premolar
D)mandibular; molar

Question 19

When using a size #1 film sensor for anterior images using the paralleling technique,_____ maxillary and _____ mandibular images are exposed.

A)five; four
B)six; four
C)four; three
D)three; four

Question 20

The bitewing view is used for detecting:

A)abscessed teeth.
B)periodontal disease.
C)interproximal decay.
D)both b and c

Question 21

Periapical radiographs are essential in which dental specialty?

A)Pediatric dentistry
B)Endodontics
C)Oral surgery
D)Both b and c

Question 22

For the patient with a hypersensitive gag reflex,the teeth that should be exposed last are:

A)maxillary molars.
B)mandibular molars.
C)mandibular anteriors.
D)maxillary premolars.

Question 23

What is the usual number of posterior film sensor images taken in the parallel technique?

A)2
B)4
C)6
D)8

Question 24

Which film holder can aid in positioning the film during an endodontic procedure,because it fits around the dam clamp and the endodontic instruments?

A)XCP
B)EeZee-Grip
C)EndoRay
D)Stabe bite-block

Question 25

Vertical angulation:

A)differs according to the technique being used.
B)refers to the up-and-down plane.
C)can be determined in degrees marked on the outside of the tubehead.
D)is all of the above.

Question 26

An anterior set of images includes:

A)premolars and molars.
B)canines and incisors.
C)canines and premolars.
D)incisors and molars.

Question 27

One reason the bisecting technique is used is:

A)because it is recommended by the American Academy of Oral and Maxillofacial Radiology.
B)because this technique provides the most accurate image.
C)because it allows the least amount of radiation to be used to produce a quality image.
D)when patients have small mouths or low palatal vaults.

Question 28

Horizontal angulation is:

A)the side-to-side angulation.
B)different when using the paralleling and bisecting techniques.
C)correct when the central ray is parallel to the curvature of the arch.
D)determined by the Stabe bite-block.

Question 29

The bisecting-angle instrument (BAI)uses _____ to determine the correct PID angulation.

A)indicator arms
B)bite-blocks
C)aiming rings
D)dental dams

Question 30

The American Dental Association recommends that films be mounted:

A)with the concave portion of the dot facing up.
B)according to the labial mounting method.
C)as if the viewer is standing on the patient's tongue.
D)so the patient's left side is on the viewer's left side.

Question 31

One technique for the management of the patient with a gag reflex is to:

A)slide the film sensor along the palate to minimize the possibility of eliciting the gag reflex.
B)position the film sensor slowly.
C)use extraoral images.
D)do all of the above.

Question 32

The American Academy of Oral and Maxillofacial Radiology recommends using the paralleling technique because:

A)it is an easier technique to use.
B)it provides the most accurate image with the least among of radiation exposure.
C)the film sensor is placed closer to the teeth therefore reducing the chance of patient gagging.
D)Both b and c are correct.

Question 33

The number of x-ray views that makes a patient's full-mouth series depends on:

A)the dentist's preference.
B)the number of teeth present in a patient's mouth.
C)whether the paralleling or the bisecting technique is used.
D)all of the above.

Question 34

In the paralleling technique,the central ray of the x-ray beam must be _____ to the film sensor and the long axis of the tooth.

A)intersecting
B)interproximal
C)parallel
D)perpendicular

Question 35

The alignment of the x-ray beam in the horizontal and vertical planes formed by the long axis of the teeth and the film sensor placement is referred to as:

A)angulation.
B)interproximal.
C)paralleling.
D)perpendicular.

Question 36

Factors that can affect the quality of dental radiographs include:

A)film sensor placement.
B)exposure.
C)processing.
D)all of the above.

Question 37

A radiographic mount should always be labeled with the:

A)patient's name.
B)operator's name.
C)patient's name and the date the images were exposed.
D)patient's name and the date the images were processed.

Question 38

The major difference between the paralleling technique and the bisecting technique is film sensor:

A)placement.
B)size.
C)speed.
D)None of the above is correct.

Question 39

When taking periapical images,it is best to start with anterior images because:

A)they are easier on the operator to take.
B)patients are less likely to gag with anterior film sensor placement.
C)patients can tolerate the film sensor size easier.
D)of both b and c

Question 40

If the central ray of the x-ray beam is not centered on the film sensor,a partial image will result on the film sensor,which is called a(n):

A)cone cut.
B)herringbone image.
C)blurred image.
D)elongated image.

Question 41

Occlusal radiographs can be used for:

A)detecting decay.
B)checking bone levels between the teeth.
C)locating unerupted teeth.
D)checking for infections at the apex of the teeth.

Question 42

Each of the following statements is true about taking radiographs using the paralleling technique except:

A)the central ray must be perpendicular to the film sensor and the long axis of the tooth.
B)the film sensor must be placed directly against the teeth being exposed.
C)failure to center the central ray on the film sensor could result in a cone cut.
D)the central ray must be directed through the contact areas between the teeth.

Question 43

When mounting radiographs,it is important to:

A)know the anatomy of the maxilla and mandible.
B)mount the films in the order of the teeth.
C)label the mount with the patient's name and date before mounting the films.
D)do all of the above.

Question 44

When using an x-ray sensor,it is important to always:

A)place a cotton roll between the sensor and the teeth being x-rayed to protect the sensor.
B)use the bisecting technique.
C)place the sensor parallel to the incisal or occlusal edge of the teeth.
D)make sure the sensor is against the teeth being radiographed.

Question 45

When taking a premolar bitewing image,the anterior edge of the film sensor should be placed:

A)in the middle of the first premolar.
B)on the distal half of the canine.
C)on the distal half of the lateral incisor.
D)on the mesial of the second premolar.

Question 46

When taking radiographs using film,the white side of the film is always placed:

A)away from the teeth.
B)toward the teeth.
C)either away from or toward the teeth, it does not matter.
D)right next to the teeth being radiographed.

Question 47

When a size #2 film sensor is used,the anterior films are in the ______ position and the posterior films/sensors are in the ______ position.

A)horizontal; horizontal
B)vertical; vertical
C)horizontal; vertical
D)vertical; horizontal

Question 48

To correct an elongated image on an x-ray view,the vertical angulation needs to be:

A)increased.
B)decreased.
C)lowered.
D)flattened.

Question 49

The number of bitewing films needed is based on the curvature of the arch and the:

A)age of the patient.
B)size of the patient's mouth.
C)number of teeth present in the posterior areas.
D)number of periapical images taken.

Question 50

Basic principles of the bitewing technique include the:

A)film sensor is placed parallel to the crowns of the teeth.
B)blue Rinn type holder is used to stabilize the film sensor in the patient's mouth.
C)central ray is directed through the contacts of the teeth using +10 degrees horizontal angulation.
D)angulation of the PID is not a factor in the bitewing technique.

Question 51

When taking periapical x-rays,the patient's head is _____ for maxillary films and _____ for the mandibular arch.

A)tilted back slightly; tilted back slightly
B)tilted back slightly; upright
C)upright; tilted back slightly
D)upright; upright