Prosthodontics & Occlusion · single question
What is the MOST common cause of gagging in complete denture patients?
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Correct answer: C. Overextension of the posterior border of the MANDIBULAR denture
The most common cause of denture-related gagging is overextension of the distal border of the MANDIBULAR denture, stimulating the base of tongue and posterior floor tissues.
- A. Maxillary posterior palatal seal overextension can contribute to gagging in maxillary denture patients, but mandibular denture overextension is more commonly cited.
- B. The glossopharyngeal and vagus nerves mediate the gag reflex neurologically, but nerve damage is not the cause of denture-related gagging.
- C. CORRECT. Overextension of the distal (posterior) border of the mandibular denture is the most common cause of denture-related gagging. It contacts the base of the tongue and posterior floor tissues, triggering the gag reflex.
- D. Increased VDO causes occlusal interference and discomfort but is not the primary cause of gagging.
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