Deck 41: Intraoral Imaging

Question 1

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.

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

Answer 1

paralleling

Question 2

The _____ technique may be used in some situations such as a small mouth,shallow palate,or the presence of tori.

A)paralleling
B)bitewing
C)bisecting
D)long-cone

Answer 2

bisecting

Question 3

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

A)18 to 20.
B)4.
C)10 periapical images and 2 bitewing.
D)4 anterior images and 8 posterior.

Answer 3

18 to 20.

Question 4

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.

Question 5

If the patient is in a wheelchair,doesn't have use of his or her upper limbs,and a film sensor holder cannot be used to stabilize the film sensor,you should do which of the following?

A)You may 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)Turn the wheelchair on its side until gravity holds the film sensor in the proper position.

Question 6

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

A)#1
B)#2
C)#3
D)Either a or b

Question 7

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 8

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)bone about 2 to 3 mm beyond the apex.

Question 9

In order 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.

Question 10

When using a #2 film sensor for anterior views using the paralleling technique,there are _____ anterior images.

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

Question 11

Incorrect vertical angulation can result in an image that is:

A)elongated.
B)foreshortened.
C)overlapped.
D)either a or b.

Question 12

The bitewing view is used for detecting:

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

Question 13

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 14

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 15

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 16

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

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

Question 17

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

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

Question 18

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 19

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 20

Incorrect horizontal angulation of the PID results in:

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

Question 21

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 a and c.

Question 22

For management of the patient with a gag reflex:

A)slide the film sensor along the palate to minimize the possibility of eliciting the gag reflex.
B)position the film sensor slowly.
C)if intraoral images are impossible to obtain, you must use extraoral images.
D)radiographic images are not necessary.

Question 23

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 24

Periapical x-rays are essential in which dental specialty?

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

Question 25

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.

Question 26

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 27

The bisecting technique is used:

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

For the patient with a hypersensitive gag reflex,the _____ should be exposed last.

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

Question 29

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)all of the above.

Question 30

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)both b and c.

Question 31

Which teeth are included in the anterior set of images?

A)Premolars and molars
B)Canines and incisors
C)Canines and premolars
D)Incisors and molars

Question 32

With the paralleling technique,usually there are ____ posterior film sensor images taken.

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

Question 33

Factors that can affect the quality of dental radiographs include:

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

Question 34

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 35

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 36

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 37

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 38

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 39

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 40

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 41

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 42

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 43

When mounting x-rays,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)all of the above.

Question 44

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 45

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 x-rays taken.

Question 46

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

Question 47

Each of the following statements is true about taking x-rays 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 48

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 49

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 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

If the size #2 film sensor is being 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