Porcelain veneers are intended to correct cosmetic flaws with your smile. Although they can protect and potentially strengthen teeth with minor cracks, chips, and superficial damage, veneers are not intended to prolong the physical life of your natural teeth. However, veneers are certainly capable of repairing and visually enhancing your smile for many years to come, and the porcelain is capable of resisting stains better than your natural enamel.