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35 Cards in this Set
- Front
- Back
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Which of the following positioning techniques is NOT correct for a panoramic exposure? A. Position the midsagittal plane perpendicular to the floor B. Position the Frankfort plane perpendicular to the floor C. Instruct the patient to bite end-to-end in the notched bite-block D. Non of the above (all of the above are correct) |
B. Position the Frankfort plane perpendicular to the floor |
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Which of the following is NOT an advantage of the panoramic radiograph? A. Simplicity B. Minimal exposure compared to a FMS C. Patient cooperation D. Image quality |
D. Image quality |
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In Panoramic radiography, a ghost image refers to: A. A radiolucent artifact with idiopathic origin B. A radiopaque image that results from using the thyroid collar C. A radiolucent image that results from failure to have the patient swallow and place their tongue on the roof of the mouth D. A radiopaque artifact that resembles its counterpart and is found on the opposite side of the film |
D. A radiopaque artifact that resembles its counterpart and is found on the opposite side of the film |
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Which of the following is (are) true concerning the alveolar crest? A. It is pointed and thin in the anterior region B. It appears more dense in the posterior region C. It is located 4-5 mm below the CEJ in health D. All of the above |
A. It is pointed and thin in the anterior region |
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Before bone loss is identifiable on film, how much loss of mineralization must occur? A. 1-20% B. 20-3-% C.30-50% D. 50-8-% |
C.30-50% |
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In which extraoral radiograph technique is the top of the patients head placed against the cassette in order to view the condyles, the base of the skull and the zygomatic arch? A. Waters Projection B. Submentovertex Projection C. Posteroanterior Projection D. Transcranial Projection |
B. Submentovertex Projection |
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Which of the following is NOT considered a predisoposing factor for bone loss? A. Calculus B. Overhanging margins of restorations C. A tooth with a long root D. Teeth (or restorations) with open contacts |
C. A tooth with a long root |
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When bone loss does not occur in a plane parallel with the CEJ we have: A. Angular bone loss B. Vertical bone loss C. Infrabony pocket formation ( pockets that go apical to the alveolar bone) D. All of the above |
D. All of the above |
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Which of the following cannot be determined about a patient's periodontal health from full mouth serious of radiographs? A. Identification of predisposing factors B. Location of bone loss C. Pocket depths D. Type of bone loss |
C. Pocket depths |
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Triangulation is an early sign of periodontal destruction and is the widening of what structure? A. Alveolar crest or interdental septum B. Periodontal Ligament C. Lamina Dura D. Junctional Epithelium |
B. Periodontal Ligament |
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The advanced periodontal disease is described as: A. Pattern of bone loss may be horizontal or vertical B. Pocket depth is 6mm and greater C. Mobility and furcation involvement are more severe D. All of the above E. None of the above |
D. All of the above |
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Which of the following is (are) true difference(s) between an intraoral x-ray tube head and an extraoral tube head (used for pano)? A. The extraoral tube head rotates around the patient while the intraoral tube head remains stationary B. The collimator in the extraoral tube head is a lead plate with a narrow vertical slit C. The x-ray beam in the extraoral unit is directed slightly upward D. All of the above |
D. All of the above |
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Screen film is more sensitive to light than regular film? (T/F) |
True |
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Calcium tungstate screens: A. Emit green light B. Emit blue light C. Require less radiation than rare earth screens D. Both A and C |
B. Emit blue light |
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In your dental office you only have a standard intraoral x-ray unit; which of the following extraoral projections could you take in the office? A. Transcranial B. Lateral Cephalometric Projection C. TMJ Tomography D. All of the above |
A. Transcranial |
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Device used in extraoral radiography to reduce the amount of scatter radiation to the film is: A. A grid B. A cephalostat C. A craniostat D. A filter |
A. A grid |
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In your dental office you only have a standard intraoral x-ray unit; which of the following extraoral projections could you take in the office? A. Body of the mandible B. Lateral Cephalometric Projection C. TMJ Tomography D. All of the above |
A. Body of the mandible |
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Which one of the extraoral techniques is used specifically to evaluate maxillary sinuses? A. Lateral Cephalometric B. Waters C. Panoramic D. Lateral Jaw |
B. Waters |
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Intensifying screens in panoramic cassettes are used to: A. Increase sharpness B. Decrease magnification C. Increase film detail D. Reduce patient exposure to radiation |
D. Reduce patient exposure to radiation |
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In terms of panoramic radiography, the curved zone in which the dental arches should be positioned to see the clearest image is called the: A. Focal trough D. End zone C. Tube zone D. Clear layer |
A. Focal trough |
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To correct the slender appearance of the anterior teeth on a pan, the dental radiographer should: A. Position the patient further forward B. Position the patient further back C. Raise the patient's chin up D. Lower the patient's chin down |
B. Position the patient further back |
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On a panoramic x-ray machine, the kVp, mA and exposure time can all be adjusted? (T/F) |
False |
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A panoramic image with a "jack-o-latern" or extreme smile results from: A. Chin too low B. Chin too high C. Patient placed too far anteriorly D. Patient placed too far posteriorly |
A. Chin too low |
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Prior to gag reflex which of the following will occur: A. Cessation of breathing B. Contraction of the muscles of the throat C. Contraction of the abdomen muscles D. All of the above E. A and B only |
D. All of the above |
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In which occlusal projection is it necessary to lower the chair to a supine position? A. Maxillary topographic B. Maxillary lateral C. Mandibular topographic D. Cross-sectional (90 degree) |
D. Cross-sectional (90 degree) |
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The gag reflex is a(n)_____________ effort, preceded by __________ of respiration. A. voluntary; an increased rate B. involuntary; cessation C. voluntary; cessation D. involuntary; an increased rate |
B. involuntary; cessation |
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Which of the following choices would you represent the suggested film placement sequence for a patient who is likely to gag? 1. Anterior 2. Premolar 3. Molar A. 2,3,1 B. 3,1,2 C. 1,2,3 D. 2,1,3 |
C. 1,2,3 |
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According to the SLOB rule, when two radiographs are compared, the object that lies to the lingual appears to have moved in the same direction of the PID, and the object that lies to the buccal appears to have moved in the opposite direction as the PID. A. Both statements are true B. Both statements are false C. The first statement is true, the second statement is false D. The first statement is false, the second statement is true |
A. Both statements are true |
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Which of the following suggestions are intended to help reduce the gag reflex? A. Instructing the patient to breath rapidly through the nose B. Asking the patient to suspend an arm or a leg in the air C. Placing a small amount of baking soda on the tip of the tongue D. Asking the patient to perform jumping jacks for 5 minutes in the treatment room |
B. Asking the patient to suspend an arm or a leg in the air |
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A developmental disability is a substantial impairment of mental or physical functioning that occurs before _____ years and is of indefinite duration. A. 12 B. 18 C. 19 D. 22 |
D. 22 |
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Today us the first dental appointment for Elena Simonov, who is 8 years old, The first adult molars have erupted in Elena's mouth, and her primary first and secondary primary molars are present. Which of the following image receptor sizes is/are recommended for a child such as Elena? 1. size 0 2. size 1 3. size 2 4. size 3 A. 1,2,3,4 B. 1,2,3 C. 1,2 D. 2,3 E. 1 |
D. 2,3 |
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Today us the first dental appointment for Elena Simonov, who is 8 years old, The first adult molars have erupted in Elena's mouth, and her primary first and secondary primary molars are present. Which of the following techniques is preferred in children with a primary or transitional dentition? A. Paralleling B. Bisecting C. Occlusal D. Anteroposterior |
B. Bisecting |
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Today us the first dental appointment for Elena Simonov, who is 8 years old, The first adult molars have erupted in Elena's mouth, and her primary first and secondary primary molars are present. How many images should be obtained for a complete mouth radiographic series for Elena? A. 12 B. 14 C. 16 D. 18 |
A. 12 |
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Today us the first dental appointment for Elena Simonov, who is 8 years old, The first adult molars have erupted in Elena's mouth, and her primary first and secondary primary molars are present. How many maxillary molar periapical images (right and left sides) should be exposed as part of a complete mouth radiographic series for Elena? A. one B. two C. three D. four |
B. two |
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The dental radiographter can use a ________ approach to prepare the pediatric patient for imaging procedures. A. show and tell B. do as I say C. quizzing D. minimal |
A. show and tell |
