Obtaining an adequate marginal fit with an indirect restoration can be difficult to achieve. Clinically acceptable margins in metallic restorations have been reported to be 50 to70 microns, while for ceramic restorations, the marginal gap
ranges from 50 to 300 microns. Certain indirect restorativetechniques with soft alloys or gold foil direct restorations
(Figure 7) may improve marginal adaptation by burnishing margins towards tooth tissue, thus reducing leakage.