Porcelain veneers are ultra-thin shells of ceramics, which are bonded to the front of teeth.
Increasingly popular since the late 1980's, porcelain veneers have been used to improve the appearance of the front teeth. Veneers are used to correct many of the same things as bonding. Veneers may be an option instead of a crown in covering a partially broken front tooth. They are much stronger and last longer than bonding does but are more expensive and time consuming to have done. They are much stronger than bonding.