Hello, it is mainly decided based on the actual situation. The main advantages of porcelain veneers on teeth are: 1. The amount of molar teeth is relatively smaller than that of porcelain crowns, generally less than about 50. 2. Porcelain veneer technology causes less damage to the dental pulp. 3. Porcelain veneers have a high degree of beauty and can achieve cosmetic effects that are just as fake as real ones. 4. Porcelain veneers cause little irritation to the gums and can well maintain the health of the gums. 5. Porcelain veneers can be treated painlessly in some cases due to the small amount of tooth removal. The disadvantages of porcelain veneers are: the production process is complicated, the veneers are more brittle, and the cost of molding the dental tissue is high. Porcelain veneers are generally used to repair front teeth, mainly to solve aesthetic problems.