What are the factors that affect the life span of porcelain teeth? Porcelain teeth is a good dental restoration method, lovers of beauty to do porcelain teeth is to be able to restore the chewing function of the teeth, and porcelain teeth missing life they are very concerned about the issue. For the factors that affect the life of porcelain teeth, the following is a detailed description. 1, the factors affecting the life of porcelain teeth of the patient’s own reasons: the patient failed to effectively maintain oral hygiene after restoration, periodontal disease hazards did not pay enough attention to the regular follow-up, some until the last abutment teeth loose to come to the clinic. 2, the factors affecting the life of porcelain teeth are the doctor’s operation: the process of tooth preparation caused heavy damage to the gums. Some have periodontitis before doing porcelain teeth, without periodontal treatment to do porcelain restorations, resulting in the further development of periodontitis. There is overhang between the edge of the restoration and the cervical part of the abutment teeth, forming plaque and calculus accumulation. Inadequate preparation of the axial surface of the tooth, the restoration form is too abrupt, no self-cleaning effect and food on the periodontal physiological massage effect. Roughness of the restoration surface, easy to attach calculus. Poor restoration morphology and poor restoration of the abutment gap causing periodontal damage; unreasonable saddle design or uneven force distribution, causing periodontal trauma or unfavorable cleaning. Poor quality of restoration materials causing bad gum irritation, allergy, blackening, inflammation, etc. 3, processing reasons are also factors that affect the life of porcelain teeth. Some processing manufacturers in order to make profits, in the material to the second best.