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Smarter DA quiz 1 (RHS STUDY GUIDE)
Terms in this set (39)
Which anatomical landmark can potentially be seen with periapicals of the maxillary central incisors?
median palatine sutures
When using the paralleling technique, the x-ray beam should hit at a ____ degree angle to the receptor.
Which of the following inflicts the most radiation on a patient?
Which of the following cases may require the clinician to use the bisecting technique instead of paralleling technique?
presence of tori
Which of the following radiographs are most useful for caries detection?
A size 2 film is most appropriate for:
A molar bitewing should be centered on the:
The bisecting technique uses two structures to create the "bisecting line." Those two structures are:
film and long axis of the tooth
Elongation of teeth on a radiographic image is caused by
Which film size is usually used for occlusal radiographs?
A full-mouth series radiograph was taken 2 years ago. Today, the patient is at the dental office complaining about sensitivity in the mandibular molar region. Which radiographs should be taken first?
Which receptor size is used for occlusal exposure?
When taking an occlusal projection radiograph, the vertical angulation for a maxillary topographic image would be -55°. The vertical angulation for a mandibular topographic film would be +65°.
both are false
Failing to have the x-ray beam in a position that's perpendicular to the receptor in a paralleling technique will result in:
foreshortening and elongation
The American Dental Association recommends that radiographs are mounted with the embossed dots:
all facing the same direction
Ala-tragus line connects:
side of the nose to the flap of the ear
What technique is the preferred exposure method for digital sensors?
The appropriate range of vertical angulation for a periapical of the maxillary molar with the bisecting technique is:
+20 to +30
Which of the following is NOT true regarding patient positioning during an intraoral imaging?
for mandibular techniques tilt head forward
The clinician has processed all films and she is seeing more teeth than usual. What type of error can she suspect?
The clinician has processed all films and she is seeing a moon-shaped artifact. This could be related to a:
Which of the following requires the use of a film-holding instrument?
Which of the following techniques is less likely to cause distortion?
Using the buccal object rule, a clinician takes two images. For the second exposure, the clinician moved the tubehead horizontally towards the anteriors. Compared to the first image, the object on the second image appears more posterior. The object is located:
Which film size is appropriate for use as a PA on an adult patient's upper incisor?
Which of the following radiographs are most useful for periodontal assessments?
A teenage patient has an impacted mandibular third molar. The clinician is trying to determine whether the impacted tooth is located in the lingual or buccal aspect. Which of the following intraoral techniques will help assess the position of the tooth?
buccal object rule
A premolar bitewing should include all of the following structures EXCEPT:
distal of first molar
The most appropriate receptor size for a Full-Mouth Series on a six-year-old patient is:
When placing the beam alignment device in the mouth using paralleling technique, the receptor should touch the lingual surfaces of the tooth to be radiographed. However, when using the bisecting technique, the receptor should be placed away from the tooth to be radiographed and toward the oral cavity.
both statements are false
n bisecting the angle, which of the following is NOT true?
the film is placed at a 90 degree angle from long axis of the tooth and the angle between bisected
what type of film allows the entire dentition to be viewed on a single film
What step helps prevent a large radiolucent area near the palate as seen on panoramic x-rays?
having patient place their tongue in the roof of their mouth
Which of the following statements is NOT true about panoramic images?
useful for assessing caries
panoramic films do not have
the intensifying screen is coated with
Which of the following structures appear as an inverted Y radiolucent shape on a panoramic radiograph?
nasal fossa and maxillary sinus
Which extraoral imaging technique is best to find abnormalities in the soft tissues?
Which of the following structure is radiopaque?
external oblique ridge
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