Prosthodontics & Occlusion · single question
What happens if you over-extend the buccal flange of a mandibular complete denture?
Show answer and explanation
Correct answer: B. Dislodgement of the denture
- A. INCORRECT — Over-extension actually REDUCES retention by breaking the peripheral seal and dislodging the denture during muscle function.
- B. CORRECT — Over-extension of the buccal flange of the mandibular denture into the buccinator muscle action area will cause the denture to be displaced/dislodged (unseated) during functional movements such as smiling, chewing, or speaking.
- C. INCORRECT — Over-extension reduces stability and retention, not increases it.
- D. INCORRECT — While mucosal soreness may occur, the primary and immediate clinical consequence is dislodgement of the denture during function.
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