What is the likely cause of an inability to swallow while using dentures?

The inability to swallow while using dentures can often be attributed to overextension of the denture's flange. This condition occurs when the borders of the denture extend beyond the natural anatomical limits of the oral cavity. As a result, the extended flange can interfere with the normal movements of the tongue and the soft palate during swallowing, leading to discomfort and difficulty.

Overextended flanges can create a sensation of bulkiness, causing the patient to feel that there is too much material in their mouth. This perception can disrupt the coordinated muscle activity required for swallowing, resulting in an inability to swallow comfortably. Correctly fitting dentures should allow for natural tongue movement and should not impede the swallowing reflex.

While incorrect placement of the denture, allergies to the material, or persistent oral lesions are potential issues related to denture use, they are less directly linked to the immediate mechanical challenges experienced during the act of swallowing compared to the impact of overextended flanges.