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Retromolar Pad Denture Extension — NDEB AFK MCQ

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EasyProsthodonticsRetromolar Pad Denture ExtensionNDEB AFK

The functional impression area for a mandibular complete denture extends distally to include approximately what proportion of the retromolar pad?

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Correct answer: D — Two-thirds

The posterior extension of the mandibular complete denture base should cover approximately two-thirds of the retromolar pad. This provides maximum posterior support and seal without impinging on the pterygomandibular raphe or the anterior border of the ramus (which would cause pain and denture dislodgement). The retromolar pad is a reliable landmark because it does not resorb significantly after tooth loss (unlike the alveolar ridge), providing a stable posterior reference for denture base extension.

Reference: Zarb – Prosthodontic Treatment for Edentulous Patients, 13th ed., 2013