Many Chinese people have tetracycline teeth, which seriously affects their beauty. And some common methods such as drug bleaching, laser bleaching, etc., can not be permanent, almost in a year only within the yellowing and graying again. The previous porcelain dental technology, the need to grind the teeth nearly 2mm, a lot of damage to the teeth, and the braces are metal, the outside is porcelain. Under the fluorescent light, it will look very fake, not enough simulation, natural. Over time, because the metal ions free, but also often stain the gums a black line. Now, there is a newest dental beauty project —- all-porcelain veneers, because with less tooth wear (only need to grind the tooth surface about 0.5mm), the effect of natural realistic and widely accepted by many beauty lovers. Many famous artists, such as S, Lee Young Ae, etc., have directly benefited from the latest new technology of dental aesthetic veneers. All-porcelain veneers: After the surface of the teeth is removed, a special porcelain material is used to cover and paste onto the teeth, and the veneers play a cosmetic role. The technology of dental porcelain veneers originated in Europe and the United States in the 1980s, because the teeth themselves are minimally removed, even without anesthesia, while the color, shape, alignment and size of the teeth can be changed to achieve a perfect and lasting cosmetic effect, so all-porcelain veneers are very popular in Europe and the United States. Advantages of dental porcelain veneers Safety Porcelain veneers remove less tissue, in some cases even do not wear the tooth tissue, so you can save a lot of dental tissue, no need to kill the nerve, basically control the postoperative pulp inflammation, necrosis and other sequelae of full crown restoration, can maintain the long-term health of natural teeth. Aesthetics Porcelain veneers simulate the cosmetic effect, with the same optical qualities of natural tooth tissue, does not contain any metal components, showing the best aesthetic effect, absolutely no porcelain teeth common gum black line phenomenon. There are many different colors of porcelain blocks to choose from when making porcelain veneers, while external staining can be used to fine tune the color. Clinical bonding when there are five different shades of adhesive and white coloring agent can be used to assist in adjusting the color of porcelain veneers to achieve overall coordination of the cosmetic effect. The high wear resistance of porcelain itself and the lack of coloration can make porcelain veneers achieve permanent whitening effect. Health Porcelain veneers have excellent light transmission, dental preparation can be flush with the gums, which is conducive to protecting the gums and making impressions and bonding porcelain veneers. The area where the gums meet is only on the lip side, which is less irritating to the gums. There is no discoloration of the gums caused by the metal ions of metal porcelain teeth. The hardness of porcelain crowns is greater than that of tooth enamel, which can cause wear and tear on the jaw teeth. The hardness of porcelain veneers is lower than the enamel, which protects the jaw teeth. Comfort Traditional porcelain restorations require the removal of the natural teeth on the lingual side, which are usually healthy and in the best harmony with the lingual and opposing teeth. It is impossible to restore even the best metal porcelain teeth to their former natural tooth condition. Porcelain veneer restoration basically does not need to grind the lingual part of the tooth, can save most or even all of the lingual form, effectively protect the jaw teeth, while the tongue contact is still undamaged natural teeth, natural touch, comfortable, to avoid the tongue and traditional porcelain teeth contact “foreign body feeling”. Therefore, porcelain veneers have a good comfort behavior. Disadvantages: All-porcelain veneers compared to traditional metal porcelain teeth, all-porcelain veneer technology requires doctors with a fairly high level of skill, strict operational steps required, while the price is relatively expensive, so in the porcelain veneer domestic at present mainly in some economically developed areas more widely used.