The process is not reversible.
Veneers are more costly than composite resin bonding.
Veneers are usually not repairable should they chip or crack.
Because enamel has been removed, your tooth may become more sensitive to hot and cold foods and beverages.
Veneers may not exactly match the color of your other teeth. Also, the veneer's color cannot be altered once in place. If you plan on whitening your teeth, you need to do so before getting veneers.
Though not likely, veneers can dislodge and fall off. To minimize the chance of this occurring, do not bite your nails; chew on pencils, ice, or other hard objects; or otherwise put pressure on your teeth.
Teeth with veneers can still experience decay, possibly necessitating full coverage of the tooth with a crown.
Veneers are not a good choice for individuals with unhealthy teeth (for example, those with decay or active periodontal disease), weakened teeth (as a result of decay, fracture, large dental fillings) or for those who have an inadequate amount of existing enamel on the tooth surface.
Individuals who clench and grind their teeth are poor candidates for porcelain veneers, as these activities can cause the veneers to crack or chip.