In the 1970s, the famous German vita company invented in-ceram technology, the strength of all-porcelain crowns has been greatly improved, and soon applied to clinical, all-porcelain crowns realistic aesthetic effect shocked dentists, even the dentist is difficult to distinguish which one is a false tooth. Zirconia computerized all-porcelain teeth have the following characteristics: 1, the crown without metal support, but has a high strength, refractive index is basically close to natural teeth, edge dense and high precision, with excellent aesthetic effect, the only disadvantage is the price is expensive. In addition, the current all-ceramic technology can only produce a single crown and three units of bridge, if more teeth are missing, it is not suitable for all-ceramic technology restoration. Nowadays, zirconia computerized all-porcelain technology has become popular in the United States and European countries, bringing the best treatment results to the majority of tetracycline teeth patients. 2. High density and strength. The unique resistance to rupture and strong curing performance after rupture can make more than 6 units of porcelain bridges, solving the problem that all all-ceramic systems cannot make long bridges. 3, The natural feel of tooth color and inconspicuous crown edges are also benefits of using zirconia all-ceramic restorations. Especially for patients with high aesthetic requirements pay more attention to the natural color of this advantage, because this makes the restoration with the healthy teeth as one, it is difficult to distinguish. 4, MRI examination, non-metallic zirconium dioxide on the x-ray but no obstruction, MRI examination without removing the dentures, save a lot of trouble. 5. Zirconium dioxide is an excellent high-tech biomaterial. It is biocompatible and superior to various metal alloys, including gold. Zirconia is non-irritating and non-allergic to the gums and is very suitable for application in the mouth, avoiding allergy, irritation, corrosion and other undesirable stimuli produced by metals in the mouth. 6, Zirconia material compared to other all-ceramic restorative materials its strength advantage allows the doctor to achieve a very high strength without excessive grinding of the patient’s real teeth. 7, zirconium dioxide porcelain teeth with high quality, said its high quality not only because of its materials, expensive equipment, but also because it uses the most advanced computer-aided design, laser scanning, and then computer-controlled grinding production, as perfect. Based on the above advantages, zirconium dioxide is already a favorite, and looking to the future, this high quality ceramic material will definitely become the trend for future cosmetic dental restorations. Although zirconia computerized all-porcelain teeth have many advantages, however, its technical requirements are also very high, the doctor must have a high clinical level in order to prepare the teeth to the appropriate form, the bonding of all-porcelain restorations also requires special materials, which means that only a high level of restorative doctor, in order to master the technology well. Porcelain materials have good biocompatibility, will not cause gum staining and allergies, no adverse effects on the human body, as the level of technology continues to improve and people’s standard of living, more and more patients will choose all-porcelain teeth to restore their perfect smile.