Dental experts remind people that not everyone is suitable for making porcelain teeth. Doctors in the Department of Prosthodontics of the Ninth People's Hospital specifically pointed out that people with oral diseases, especially those with "diseased" roots, should choose carefully. In addition, minors, pregnant women or lactating women below 18 are not suitable for porcelain teeth. Dentists also reminded that making porcelain teeth does not mean once and for all, and careful protection is very important. Because of raw materials, the stress of most porcelain teeth is limited. Once the pressure exceeds this level, it is easy to damage teeth and even affect life. Therefore, the first time you wear it, you should eat it soft. It is best not to gnaw hard bones and eat crabs with porcelain teeth. The joint between porcelain teeth and abutment is easy to accumulate plaque and form tartar, so pay attention to cleaning, dental floss can be used between teeth, and go to the hospital for regular inspection and cleaning. ■ Tooth loss, healthy adjacent teeth, no inflammation. After examination by a doctor, porcelain restoration can be considered; ■ Bad color or shape of teeth, such as tetracycline teeth; ■ Abnormal dentition morphology is not suitable for orthodontic treatment; ■ Broken teeth or residual roots caused by trauma, if the root is long enough and the periodontal conditions are good, porcelain teeth can be restored after perfect root canal treatment; ■ Dental caries or tooth defects are large, and the teeth are gray or yellowish brown, which can be restored with porcelain teeth to increase strength.