Relines Dentures become loose because the supporting structures change shape or shrink. Refitting is an economical method of restoring retention, stability and function to otherwise satisfactory dentures. The tissues which support complete dentures are not as stable as the dentures themselves. The changes occuring in the soft and hard tissues eventually reach a point where dentures must be remade or refitted.
Some dentists use a self-curing resin material within the denture.
Most dentists prefer to make new impressions within the dentures and then have the dentures reprocessed in the dental laboratory. This results in a more permanent and hygienic result. Self-curing relines usually weaken the denture, while a processed reline often strengthens the denture. A reline is the resurfacing of the tissue side of a denture with new base material so that it will fit more accurately. Rebase A rebase is the process of refitting a denture by replacement of the entire denture base material without changing the occlusal relations of the teeth.