If the dentures no longer fit as well as they once did, you may need to have a procedure done to refit the base of the denture, called a“reline”. Check with your denturist to see if your dentures can be relined. It is best not to reline your dentures with over-the-counter reline kits. This procedure, which can be done by your denturist, will enable your dentures to have a tighter, better fit.