Repairs and Relines

Repairs

Both major and minor repairs are available
Precise tooth-frame relationships can be established by resin pickup and laser welding of segments of Co-Cr removable partial denture frameworks
One of the most common partial denture repairs is to replace or add a new tooth to a pre-existing partial due to tooth loss. Laser welding a wrought wire loop to the major connector allows for retention of an acrylic tooth
When replacing or adding a new anterior tooth to a pre-existing partial in which there is insufficient interocclusal space, a metal backing may be required. This backing can be laser-welded to the framework. An opposing cast is needed from the dentist, as well as a pickup impression of the partial denture
Small connectors and broken clasps can be successfully repaired with laser welding
An impression is often required with the denture seated in the mouth which is then poured up (if alginate) or sent to the laboratory (if polyvinylsiloxane)

Relines

The rapid shrinkage of bone after tooth removal means that the denture will need to have the fitting surface relined in 2-3 months
When the fit of a denture is no longer adequate, relining is recommended
Two types of relines are available. A wash is taken inside the fitting surface of the denture, which is required for both hard and soft relines

a. Hard - The tissue surface is replaced with hard acrylic.
b. Soft relines are recommended in the following clinical situations: