A metal alloy powder comprising: 40-95wt% palladium； 5-35wt% chromium； 0-8wt% gold； 0-10wt% silver； 0-10wt% platinum； and 0-3wt% of ruthenium, rhenium or iridium； where the total proportion of palladium, gold, silver and platinum is 65-95wt%； and where the total proportion of palladium, chromium, gold, silver and platinum is 95-100wt%. Preferably, the alloy is made up of palladium. Preferably, the alloy powder is 85% palladium and 15% chromium. Preferably, the powder has average diameter 20-40µm and has thermal expansion coefficient of 13-15x10-6 °C-1 at 500°C. The powder alloy is made into a metal frame for a dental prosthesis using selective layer sintering, preferably in an inert atmosphere, and comprises a porcelain coating attached to the frame.
