Gold Electroforming System: GES restorations.

The use of electrolysis as a means of forming a substructure for porcelain-fused-to-metal inlays, onlays, full crowns and even bridges has many advantages over the use of cast metal. Composed of pure gold deposited directly onto a duplicate die, electroformed copings have a high degree of biocompatibility and accuracy for increased durability (photograph 18). The internal surfaces of the coping match the exterior of the duplicate die exactly, and the thickness of the material deposited is a uniform 0.2mm. Marginal accuracy on completed restorations is on average 19 microns. The gold has the added advantage of burnishability. Recent developments in equipment and technique have placed this form of substructure well within the scope of consideration for most ceramics laboratories.