A high-quality, precise porcelain tooth depends on three factors: the skill of the surgeon, the materials used and the process. This is in line with the “short-board theory” of management, i.e. the amount of water in a barrel depends on the shortest board. In other words, in a system, the strength of the system depends on the worst factor. In other words, in a system, the system depends on the worst factor. In the case of porcelain teeth, if one of the factors, such as the doctor, the material, and the process, is not good enough, then the final porcelain teeth will not be ideal. There are three main steps in the fabrication of porcelain teeth: tooth preparation, molding, and fabrication of the restoration. Each step consists of a number of small steps, and each small step has detailed technical specifications and detailed requirements. (e.g., the lip, tongue, neighbor and occlusal surfaces of the prepared teeth have a certain shape, angle, width and height data requirements). When preparing the neck, a gingival line must be placed in order to hide the lip edges of the denture under the gingival margin and to protect the gingiva from damage. This task is somewhat difficult and time consuming. Some doctors skip it. However, this should never be skipped. Every doctor at Gaoxiang Dental Clinic must strictly follow the latest foreign technical specifications. After preparing the tooth, the next step is to take the model. It must be noted that this step is extremely critical. The accuracy of the model is closely related to the impression material used. At present, there are two types of impression materials that can be used, one is alginate impression material, a silicone rubber material. Alginate impression material (the kind of water adjustment), the composition and jelly in the agar similar, the advantage is cheap, easy to use, the disadvantage is the coefficient of expansion is large, easy to deformation of water loss, suitable for the precision requirements of the restoration is not high, such as movable teeth or temporary teeth. It is difficult to meet the requirements of high-quality porcelain restorations, and the use of silicone rubber is possible to achieve precision results. Silicone rubber has the advantages of good elasticity, smooth and clear impression surface and minimal volume change. It is orders of magnitude more precise than common alginate impression materials. It can fully satisfy the requirements of porcelain teeth for the degree of precision. Therefore, we should use silicone rubber to take impressions for porcelain crowns. Its only drawback is the high price, the cost is tens of times that of alginate impression, Gaoxiang Dental currently uses Italian zegplus silicone rubber, and only charges 50 yuan (half a mouth) cost fee, your investment of this 50 yuan on the quality of porcelain teeth is a guarantee for the long-term health of your teeth is also absolutely cost-effective. At present, the domestic denture processing plant is also a mixture of good and bad, some only 4, 5 people’s workshop, there are thousands of modern enterprises, Gaoxiang dental cooperation processing plant is in more than ten factories after strict screening to determine, specializing in the production of Europe and the United States pieces (Europe and the United States doctor with silicone rubber mold after sending over for processing) of the domestic first-class processing plant, there is adequate quality assurance. Usually in clinical contact with a lot of guests on the knowledge of cosmetic dentistry is very little understanding, will only blindly compare the type of porcelain, materials, such as porcelain, cast porcelain, precious metal porcelain, and then ask: which country, is not imported? After getting the doctor’s extremely positive answer, it is full of longing to accept the dental beauty. In fact, at present, almost all domestic porcelain powder are imported products, as for different countries, different brands of products, the technology gap is not very large, the real importance of the patient is the doctor’s skills and the level of technicians. This is like cooking the same dish, although the quality of oil, salt, soy sauce and vinegar there is a certain difference, but the key is still the chef’s skills and his mastery of the fire, which is the difference in their value. Because porcelain restoration will inevitably wear away part of the healthy tooth tissue, from the perspective of caring for teeth, we must be very careful to choose a doctor and use better materials according to personal conditions, and must not be hasty and only want to be cheap. If you do not have a good choice, you would rather not do it than do it wrong.