Denture Lingual Overextension — ORE Part 1 MCQ

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EasyProsthodonticsDenture Lingual OverextensionORE Part 1

A patient attends with a mandibular partial denture that causes a painful ulcer on the lingual mandibular mucosa. Which denture feature is the most likely cause?

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Correct answer: A — An overextended lingual flange

**A is correct.** A local ulcer on the lingual aspect of the mandible is most consistent with traumatic impingement by an **overextended lingual flange**. During tongue movement and elevation of the floor of mouth, an excessively long lingual border compresses the mucosa and produces a pressure sore. Denture-related traumatic ulcers are assessed clinically and the offending pressure area is relieved by denture adjustment. An underextended buccal flange may reduce support or retention but does not directly traumatise lingual tissues. An overextended buccal flange could cause a buccal sulcus ulcer, not a lingual one. Excessive freeway space concerns occlusal vertical dimension rather than a local flange pressure lesion. Tooth shade has no bearing on fit or mucosal trauma.

Reference: Al Quran FA, Rashdan BA, Al-Dwairi ZN. Traumatic Ulcerations Frequencies and Postinsertion Adjustment Appointments in Complete Denture Patients. 2022. https://pubmed.ncbi.nlm.nih.gov/35017992/