The natural shape of the human mouth changes constantly. In particular, the gums shrink over time and this is the reason why dentures that were a perfect fit when first supplied will become loose, sometimes causing embarrassing loss of a denture in a public place.

In extreme cases, a complete new denture may be required. However, relining is the process of refitting the existing denture to the jaw shape. Some professionals refer to relining as “rebasing” essentially the same process.

Most of the time a reline can reshape existing denture, making the fit virtually as new. The benefits include lower cost than a complete replacement, increased comfort, denture retention, reduction of incorrect pressure on the gums that causes soreness and reduced entrapment of food debris. 

Regardless of whether the existing dentures are metal or acrylic, the process is simple and painless. The reline process usually takes only a day or two. When the dentures are refitted into the mouth usually only simple adjustments are needed.

As simple as this process is, the result depends entirely upon the skill and professionalism of the dental technician.