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20 Cards in this Set
- Front
- Back
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What are the differences between direct sensors (charged couple devices, CCD) and indirect sensors (photostimulable phosphor plates PSP)?
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-Direct sensors are wired, and do not require processor. Indirect sensors can be wireless, and require an intermediary scanner. -PSP plates in indirect sensors require frequent replacement because they degrade after 30-50 exposures.
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What film/sensor size is the smallest available, and used for pa's and bitewings in children under 7?
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Size 0 (pediatric)
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What film/sensor size is for pa's and bitewings in children over 7?
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Size 1 (adult anterior)
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What film/sensor size is used for modified anterior occlusal radiographs for children in primary dentition under 6? Also used as pa's and bitewings for older children who can accomodate film/sensor.
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Size 2 (adult posterior)
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What film/sensor size is used for max. and mand. occlusal radiographs; lateral views of ant. teeth?
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Size 4
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What is the Rinn Snap-A-Ray? What is one disadvantage of it?
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Plastic film holder that is beneficial cuz it alligns with radiograph cone. Disadvantage: obscures large portion of image area of film.
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What are panoramic radiographs not useful for?
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Panos can't be used to diagnose mild to moderate caries.
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What are the indications for panos (4)?
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growth and development abnormalities, injury to jaw, pathology of bony structures, and ortho cases.
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What are the indications for bitewings?
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Detecting interproximal caries, evaluating alveolar bone, evaluating structures around teeth, and evaluationg restorative procedures and pulpal conditions.
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For primary or early mixed dentition, what should a good bitewing include?
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Distal of canine to the mesial of the first permanant molar (if erupted)
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With periapical radiographs, is the image on the maxilla or mandible more clear?
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Mandible. Maxilla can have overlapping primary and permanent dentition.
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What size film is used for occlusal radiographs? Why?
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Size 4. Allows visualization of a larger area than size 2.
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What are the 5 clinical considerations for taking radiographs?
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age of patient, oral hygiene of patient, patient history, patient cooperation, and your clinical examination.
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When are parents allowed in the operatory (3)?
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child is under three, emergency situations, disabled child.
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what are 3 remedies for gagging?
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distraction, salt on the back of the tongue, and nitrous oxide
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vertical cone postion for bitewing?
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plus 10 degrees
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vertical cone postion for maxillary PA?
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plus 40 degrees
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vertical cone postion for mandibular pa?
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minus 10 degrees
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vertical cone position for modified maxillary occlusal?
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plus 60 degrees
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vertical cone position for modified mand. occlusal?
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minus 30 degrees, patient occlusal plane at plus 30 degrees relative to the floor.
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