Prosthodontics & Occlusion · single question
What can occur due to an under-extended flange in a denture?
Show answer and explanation
Correct answer: A. Denture comes out during puckering lips
- A. CORRECT. An under-extended flange loses border seal and retention, so the denture dislodges with lip and cheek movements.
- B. INCORRECT. Under-extension tends to allow more food collection, not less.
- C. INCORRECT. A sunken profile relates to vertical dimension and support, not flange length.
- D. INCORRECT. Painful ulcers are caused by over-extension, not under-extension.
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