Veneers are used to improve the appearance of stained, slightly misaligned or misshapened teeth. There are two types of veneers: composite and porcelain. 

Composite veneers consist of a tooth-colored filling material that is placed on the surface of the tooth, shaped, hardened and then polished. 

A porcelain veneer first requires the surface of the tooth to be slightly reduced. A porcelain shell is then fabricated and cemented on the tooth. Porcelain veneers are durable and less likely to discolor compared to composite.