Is a short or a long PID recommended for use in occlusal radiography?
What will be an ideal response?
A short (8 inch [20.5 cm]) PID is recommended. The shorter PID may make it easier to position into the increased vertical angulations used in occlusal radiography. In addition, because of the increased image receptor-object distance, use of a longer PID would add to the dimensional distortion.
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One difference that makes the child's airway different from that of the adult is:
A) the tongue is proportionally larger. B) most breathing takes place using the intercostal muscles. C) airway structures are less easily obstructed. D) the trachea is long and rigid.
Which is a device used to estimate intraocular pressure (IOP)?
a. A corneal trephine b. A Geissen eye ruler c. An air-puff device d. A phacoemulsifier to measure fluid pressure