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Anesthesia · single question

Which anesthetic technique best manages a gag reflex during an upper alginate impression?

  1. Inferior alveolar nerve block
  2. Glossopharyngeal nerve block
  3. Internal laryngeal nerve block
  4. Long buccal nerve block
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Correct answer: B. Glossopharyngeal nerve block

The gag reflex is transmitted sensorially by the glossopharyngeal nerve (CN IX). A glossopharyngeal nerve block (tonsillar pillar injection or topical benzocaine spray) effectively suppresses the gag reflex for difficult impressions. The vagus nerve carries the motor component.

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