The general porcelain dental processing factory warranty is 2 years, but only for damage to the porcelain crown caused by normal use of the tooth. The service life of a porcelain crown varies from person to person, depending on patient factors (such as the way it is used, chewing habits, the nature of the food, the bite in the mouth, etc.), the doctor’s skills (the level of dental preparation, operating procedures, etc.), the different processing plants and the material of the porcelain crown. For the service life of porcelain crowns, patient factors play a decisive role. Porcelain teeth since wearing, should be regular maintenance and care, daily brushing and cleaning, to maintain oral hygiene; avoid smoking, causing periodontitis; avoid eating hard objects, to prevent porcelain crowns chipped or crown splitting. If there is any discomfort in the process of use, you should always seek medical advice. In addition, the biological compatibility of different materials of porcelain crowns is also different, resulting in different pressure during use, and the material of porcelain crowns used for anterior and posterior teeth will be somewhat different, which should be selected according to the porcelain crown material provided by the treating doctor. It should be noted that the standardized operation of the doctor in the preparation of the tooth also affects the service life of the porcelain crowns, so it is recommended to visit a regular dental hospital or the dental department of a general hospital.