The service life of all-porcelain teeth is affected by a variety of factors such as the way of use, oral conditions and physician design, and there is no fixed life expectancy. 1. The way of use: all-porcelain teeth are made of porcelain powder burned and cast, if used improperly, there is the possibility of chipping, especially in the anterior region affecting the aesthetic. 2. Oral conditions: If oral hygiene is poorly maintained, it may lead to the occurrence of periodontal disease, dental alveolar bone resorption, gingival recession, all-porcelain crowns between the neck of the tooth body gap, especially with the loosening of the affected teeth, when the abutment teeth problems, all-porcelain teeth will also affect the service life. 3. Physician design: good and reasonable design, can greatly delay the service life. It is recommended to go to the regular hospital stomatology department, and maintain oral hygiene, every 6 to 12 months regular oral examination.