A dental veneer is a porcelain or composite "shell" that is placed over the teeth to mask chips, stains, or other blemishes that otherwise can not be corrected. The shell is permanently bonded to the teeth, making this a long lasting option for dramatically imporving the appearance of the tooth or teeth.
Almost anyone looking to improve the appearance of their teeth can benefit form veneers. The only requirement is that the underlying teeth be healthy. Often this just requires a throrough cleaning and cavity treatment, to prevent any decay under the veneer.