Metal fused porcelains, which are more suitable for use in back teeth in missing teeth, contain metals such as iron, nickel and cobalt in order to increase durability in their infrastructure. Thanks to the durability of the metal infrastructure, it is suitable for use in long toothless areas and long bridges. Although metal-based porcelain is durable, it has some disadvantages;
light transmittance is not good due to metal, they appear opaque,
it is difficult to match the exact tooth color,
Over time, there may be gray/purple discolorations on the gingiva depending on the metal,
Metal allergy may develop in allergic individuals.
The advantages of porcelain with metal infrastructure are;
suitable for use in toothless long spaces,
The cost is more affordable than other varieties.