A dental veneer is like a thin shell made out of high strength porcelain usually some kind of zirconia or cheaper composite materials. They are customised and made specifically for the location in the mouth and then specially glued to the front and the bottom side of the tooth.
A dental veneer is suitable to treat dental conditions like a minimally crooked tooth, chipped teeth, discoloured teeth, or they can even be used to adjust spaces in between the teeth.
An aesthetic dental veneer always made by either a dental technician or veneers specialist manufacturer. Cheaper composite veneers can be made by the dentist in the dental office.