They can be made of porcelain, gold, or composite resin this makes it strong and very natural looking. These pieces are bonded to the damaged area of the tooth. An inlay is a filling made in the dental laboratory and it is used inside the cusp tips of the tooth.
Traditionally, gold has been the material of choice for inlays. In recent years, however, porcelain has become increasingly popular due to its strength and color, which can potentially match the natural color of your teeth.
Inlays last longer than white fillings and are recommended for larger cavities where white fillings would not be strong enough.