REBASING AND RELINING
Among the most annoying and difficult problems in prosthetic dentistry are those related to prolonging the useful life of dentures
As the denture foundations change, the impression surfaces of the dentures cease to fit the tissues properly
The loss of the foundations for dentures causes loss of their retention and stability
If the occlusal vertical dimension is enough and if the dentures didn’t lose their orientation to their basal seat, the dentures may be corrected in the short working time allowed by the available impression materials
Complete dentures are rebased by supplying an entirely new denture base when it is refitted to the oral tissues and the opposing denture
Dentures are relined by adding new denture base material to an existing denture base as it is being refitted
Both procedures involve making of a new impression in the existing denture
