Is it acceptable to recline the chair or tip the headrest back to facilitate obtaining an occlusal radiograph?
What will be an ideal response?
Yes. For the mandibular cross-sectional occlusal radiograph, the occlusal plane should be perpendicular to the floor. If these planes cannot be achieved by moving the patient's head, it is acceptable to either recline the chair and/or tip the headrest backward to achieve the correct patient position.
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If you discover that a seemingly ordinary EMS call is actually a hazardous materials incident, you should:
A) immediately notify the dispatcher and request the appropriate resources. B) isolate the incident as much as possible to avoid the risk of harm to others. C) immediately establish a hot zone and cordon it off with red or yellow tape. D) size up the scene, assessing factors such as wind direction and terrain features.
At –183° C, which of the following gases exists as a pale, bluish liquid that is slightly heavier than water?
a. Air c. Nitrous oxide b. Oxygen d. Carbon dioxide