Before relining a denture, what must be done first?

Before relining a denture, it is essential to ensure that the denture is clean. Cleaning the denture removes any food debris, plaque, or calculus that could interfere with the relining process. A clean surface is necessary for the new material to bond effectively with the existing denture base material, ensuring a proper fit and longevity of the relining procedure.

Ensuring the denture is free of contaminants allows for better adhesion of the relining material, and it facilitates a more accurate impression of the oral tissues.

Other actions, such as checking the fit or adjusting occlusion, can be important but are secondary to ensuring the denture is clean before any further modifications, including relining, take place.