In dentistry, a veneer is a thin layer of restorative material placed over a tooth surface, either to improve the aesthetics of a tooth, or to protect a damaged tooth surface. There are two main types of material used to fabricate a veneer, composite and dental porcelain. A composite veneer may be directly placed (built-up in the mouth), or indirectly fabricated by a dental technician in a dental laboratory, using dental porcelain and later bonded to the tooth, typically using a resin cement.
Veneer are not used to replace missing teeth but used for cosmetically improving the teeth. A veneer crown is thin shell that fit over a slightly shaved down/prepared tooth.