Denture Gagging Cause — ORE Part 1 MCQ
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Correct answer: E — The posterior border extending beyond the vibrating line
The posterior border should be assessed first. A maxillary complete denture should terminate at the vibrating line; extension beyond it impinges on the mobile soft palate and can provoke the gag reflex. The stem states that the denture is otherwise well fitting, directing attention to a local posterior extension error rather than general retention or adaptation. An overextended anterior flange is more likely to cause sulcus discomfort or displacement. Excessive incisor prominence affects lip support and appearance, while premature posterior contacts destabilise dentures during function. Poor palatal adaptation mainly compromises retention rather than selectively stimulating gagging.
Reference: Elmanaseer WR, Alamoush R, Alsoleihat F, Al-Omiri MK. Position of Fovea Palatinae relative to the vibrating line in various soft palate classifications among Jordanian edentulous population. Scientific Reports, 2024. https://pubmed.ncbi.nlm.nih.gov/38671220/