A clinical evaluation of semiprecious alloys for dowels and cores.

The semiprecious metals investigated and hard dental gold alloys may be manipulated in a similar manner. The semiprecious metals produced accurate and well-fitted dowels needing minimal adjustment. Being harder than type III gold alloy, they would be ideal for casting dowels and cores. Before considering these semiprecious alloys as final restorations, however, they must be further examined for resistance to tarnish and corrosion and their marginal adaptability and burnishability.