Porcelain veneers are thin shells made of porcelain that are bonded to the front of teeth. They can transform a dull smile and last over 20 years if cared for properly. Veneers are a good option for slightly misaligned or discolored teeth and usually require only minimal tooth structure removal. Good candidates have experienced tooth damage or cracking. Regular brushing and visits to the dentist are needed to ensure veneers remain in good condition.