What material of metal is better for braces?

Hello, due to the more varieties of porcelain teeth materials, such as nickel-chrome alloy, titanium alloy, gold, all-ceramic, cast porcelain, etc., the entire tooth restoration process only takes 7 days, porcelain teeth are characterized by the same tooth color as natural teeth, good color, realistic appearance, wear-resistant, corrosion-resistant, non-discoloration, deformation, it is a more desirable restorations. Cobalt chromium alloy porcelain teeth clinically used for posterior teeth restoration.