All-ceramic teeth can generally be used for 8 to 10 years, the use of appropriate cases can be used for life, the affected tooth pulpitis or periapical periodontitis, as well as all-ceramic crowns rupture, perforation and other conditions may affect the use of all-ceramic crowns time, as follows. 1. Pulpitis or periapical inflammation of the affected tooth: If the affected tooth is a living pulp tooth, it may cause pulpitis or periapical inflammation due to mechanical stimulation or secondary caries after full crown restoration, usually it is necessary to remove the restoration and then carry out root canal treatment, and then carry out full crown restoration after the inflammation is under control. 2. The rupture and perforation of all-ceramic crowns: excessive external forces, insufficient resistance of the material, too much adjustment and abrasion may lead to the rupture or perforation of all-ceramic crowns, smaller defects can be used to restore the shape of the resin, and larger defects need to be removed from the restoration and then re-do. There may be other factors affecting the use of all-ceramic teeth time, if the above symptoms occur, it is recommended to go to the hospital in time to receive professional treatment.