Chinese name: All-ceramic teeth Other names: All-ceramic crowns: tooth restoration All-ceramic teeth classification, identification, indications, prognosis, matters needing attention, expert opinions, all-ceramic teeth classification can be divided into 1 according to different materials. Such as: hot die casting porcelain crown (Empress I, II and III generations), glass infiltrated porcelain crown, glass ceramic crown polished by CAD/CAM technology. 2. Alumina and zirconia all-ceramic teeth are made by grinding alumina and zirconia inner crowns by CAD/CAM technology, and then adding external decorative porcelain by layered porcelain stacking technology to make finished all-ceramic teeth or all-zirconium crowns without external decorative porcelain. The identification of glass-ceramic all-ceramic teeth has beautiful color and translucent effect, but the shading effect and strength are slightly poor, which is more suitable for the restoration of single crown or short fixed bridge in the aesthetic area of anterior teeth. Alumina and zirconia all-ceramic teeth are durable and have good shading effect. It is mainly suitable for the restoration of single crown and long fixed bridge in the posterior tooth area and the restoration of severely discolored teeth and metal post and core in the anterior tooth area. All-zirconium crown is mainly suitable for restoring chewing function in the functional area of posterior teeth. Indications: 1. Repair discolored teeth (including moderate and severe tetracycline teeth and discolored teeth with dead pulp). ); 2. Repair tooth defect; 3. Repair enamel hypoplasia; 4. Repair dentition defect; 5. Restore the contact point or occlusal relationship; 6. Repair deformed teeth and dislocated teeth; 7. Close the interdental space; 8. Planting recovery, etc. Prognosis According to literature reports, the success rate of long-term restoration of all-ceramic teeth is significantly lower than that of metal-based porcelain crowns (65438+85% in 2000). However, it has also been reported that the success rate of all-ceramic tooth restoration can reach 92-98% within five years. Precautions: after all-ceramic teeth are restored, it is necessary to avoid biting hard objects to prevent the restoration from being damaged; And you should do daily self-cleaning, such as flossing. To prevent gum inflammation; And should be followed up regularly. Expert opinion In recent years, patients have higher and higher aesthetic requirements for the repair effect. In order to make the color, shape and edge of the restored crown as close as possible to natural teeth, all-ceramic materials have been widely used in clinic. The aesthetic effect and long-term curative effect of all-ceramic teeth have been confirmed by clinical application. However, when all-ceramic teeth are restored, it is necessary to prepare more abutment teeth, which will cause certain damage to dental pulp, especially for young permanent teeth with large pulp cavity, and sometimes root canal treatment is needed before restoration. However, patients want to grind their teeth as little as possible and use living pulp as a prosthesis. Therefore, the preservation treatment methods such as porcelain veneer should be given priority in clinical selection of restoration scheme. If all-ceramic teeth are used for restoration, single crowns should be used as far as possible to facilitate cleaning after restoration. In addition, in some cases, the use of all-ceramic dental prostheses alone can not achieve the best aesthetic effect, and often needs to be combined with other treatment methods, such as gingiva, periodontal surgery, orthodontics and so on.