What causes difficulty swallowing and a sore throat from a denture?

Difficulty swallowing and a sore throat associated with dentures can often result from an overextended lingual flange. When the flange, which is the border of the denture that extends into the vestibule and around the gums, is too long or improperly contoured, it can irritate the soft tissues of the mouth and throat. This irritation may lead to discomfort, making swallowing painful or difficult.

An overextended flange can cause mechanical irritation, which might manifest as inflammation or soreness in the throat area due to the constant pressure or contact with the surrounding oral tissues. This situation emphasizes the importance of proper denture design and fitting to ensure comfort and functionality for the patient.

While factors such as an improper fit or allergic reactions could also contribute to discomfort, it is the specific issue of an overextended lingual flange that directly leads to the symptoms of difficulty swallowing and the sore throat in this context.