What is likely causing pain on swallowing when wearing a denture?

Pain on swallowing while wearing a denture can be attributed to the overextension of the lingual flange. When the lingual flange of a denture is too long or extends beyond the appropriate boundaries, it may irritate the soft tissues of the mouth, including the tongue and the floor of the mouth. This irritation can lead to pain, especially during activities such as swallowing, where the movement of the tongue and the surrounding structures can exacerbate discomfort.

Additionally, an overextended flange can create a sensation of obstruction or fullness, making swallowing difficult and painful. Proper denture fit is essential for comfort, so if the flange is not shaped correctly or extends too far, adjustments may be necessary to alleviate the symptoms. The other options may relate to discomfort in different ways but are less likely to be the specific cause of pain experienced during swallowing when the denture is being worn.