For tooth whitening, tooth beauty, tooth restoration, orthodontics, tooth protrusion and other dental problems, Xi 'an 323 Stomatological Hospital, an authoritative stomatological hospital in China, has a first-class oral diagnosis and treatment team, and is praised as the leader of oral plastic surgery hospitals by the medical community! First, tooth whitening should be operated by professional dentists. Second, the choice of indications for tooth whitening 1, for exogenous staining of teeth, such as coffee, soy sauce, tea, etc. Cold light whitening effect is the best; 2. Moderate and mild tetracycline teeth, dental fluorosis, discolored teeth caused by other factors and hereditary yellow teeth can generally get satisfactory results after one treatment. Because the principle of cold light whitening is not only to replace the pigment in enamel to the surface of dentin, but also to reduce the transparency of lens from transparent to translucent, thus reducing the pigment in dentin; 3, severe tetracycline teeth, dental fluorosis, or discolored teeth caused by other factors generally need multiple treatments, and the interval of half a month can achieve satisfactory results for both doctors and patients. Generally, after the first treatment, the shade guide will be improved by four to five levels. But intuitively, the change is not very big. After the second treatment, the results of the first treatment will be improved by at least five levels. After this treatment, we will see very satisfactory results. 4. Drug-induced discolored teeth with enamel dysplasia are easy to bring greater discomfort to patients, so it is not an indication for cold light whitening; 5. After bleaching, the color of dead pulp teeth changes rapidly, so it is not an indication for whitening teeth with cold light. Cold light whitening has no effect on filling teeth and porcelain crowns, so this kind of patients is not the indication of cold light tooth whitening. 3. Preoperative communication of tooth whitening 1. Preoperative communication with patients is very important for cold light whitening. You know, there is no treatment that can make teeth as white as paper without hurting them. Cold light tooth whitening is the best, fastest and safest whitening technology at present, and we can improve patients' teeth to the greatest extent on the original basis. 2. In foreign countries, tooth whitening is more of a beauty than a treatment. In many countries, tooth bleaching has become as common as tooth washing. Many people bleach their teeth once every six months to keep them white. What doctors have to do is to instill these concepts in them. The difference is that there are quite a number of patients with discolored teeth caused by anti-discoloration drugs such as tetracycline teeth and dental fluorosis in China. At this time, whitening has become a treatment, and it is these patients who need to communicate. We need to know their expectations, and we need to clearly tell patients the indications, course of treatment, curative effect and cost of cold light tooth whitening. Let them decide whether or not to receive treatment on their own with full knowledge; 3. Cold light tooth whitening is an absolutely safe technology, which will not cause irreversible damage to teeth or soft tissues of gums. For individual teeth with poor enamel development, cracked teeth and moderate wear, there will be more discomfort than normal teeth during treatment, such as soreness and jumping pain, but they will recover themselves within 24 hours after operation. Doctors need to tell patients all the possibilities. Let them fully understand. Fourthly, the tooth whitening colorimetric record must be colored or photographed before operation, so that patients can see it in the mirror and recognize it. This is mainly to avoid disputes, because neither patients nor doctors can clearly remember the color of teeth before treatment. The best way is to leave original records. Five, tooth whitening retention time Cold light tooth whitening effect can generally be maintained for two years, but it does not mean that teeth suddenly return to the state two years ago after two years, but because we are still eating colored food, such as coffee, soy sauce, tea and so on. Teeth will slowly re-dye, just like white clothes. Even if they are washed clean every time, they will not be as white as when they were just bought back, so we need to bleach them, but after a while, they will slowly re-dye. The intransitive verb precautions during tooth whitening 1. After the polishing sand is added with water, the soft dirt and plaque on the tooth surface are removed with a polishing cup; 2. The equipment needed in the operation is basically in the box. What needs to be provided is a slow turbine head, a polishing cup and a photosensitive lamp; 3. During the whole treatment, patients must wear eye protection glasses to prevent foreign bodies from falling into patients' eyes; 4. Before using the mouthopener, apply lip oil to the patient to avoid damaging the corners of the mouth; Pay attention to the direction when placing the mouth opener, with the longer side facing down to prevent the tongue from sticking out; 5. Be sure to blow dry the tooth surface and gingival margin before applying the gingival protectant, otherwise the gingival protectant can not strictly seal the gingival sulcus, which will cause gingival margin bleaching; If there are wedge-shaped defects and severe enamel cracks in the neck, gingival protectant should be applied to avoid discomfort to the patient during treatment; 6, whitening agent into a paste, be careful not to add all the liquid to the powder when stirring, so that the paste is too thin, but not too thick, generally stirring until the paste does not drip when provoked with a matching small brush. The inexhaustible whitening agent can not be reused, because the effective components in peroxide will decrease immediately after contact with air, which directly affects the therapeutic effect; 7. During the operation, be careful not to drop whitening agent into the patient's mouth. After the first eight minutes, use a strong straw to absorb the whitening agent as much as possible; Don't wash with water at this time. For discolored teeth caused by tetracycline or other drugs, we suggest that each irradiation time be adjusted to ten minutes. For patients with dental fluorosis, the irradiation time can be shortened to six minutes because of the strong permeability of enamel. Seven. Precautions after tooth whitening 1. We suggest that each patient take a painkiller after treatment, so as to avoid dentin hypersensitivity in individual patients after treatment and correct the gap between teeth. 2. After treatment, if the gingival protectant is not well sealed, some teeth will have gingival margin bleaching, which will disappear about half an hour after treatment. In addition, because the teeth are layered in the development process, at the end of treatment, due to the different degrees of enamel penetration in different parts, stratification will occur, especially in patients with dental fluorosis. However, this phenomenon will gradually return to nature within 24 hours, because the whitening agent still works within 24 hours after treatment. There are a few patients with dental fluorosis. Because the enamel structure of their teeth is too sparse, whitening agents are extremely permeable to them, and they will feel obviously uncomfortable during treatment. Treatment should be terminated immediately to avoid causing greater discomfort to patients. 3. There are a few patients with severe tetracycline teeth, and the color scale will rebound about two days after the first treatment. After they receive the second treatment, the whitening effect will be more stable. What is the difference between "Meiguan" tooth whitening and traditional porcelain teeth? The beauty crown is stronger than the traditional porcelain teeth. The beauty crown can correct the deformed teeth in 6 days, whiten pigment teeth, and there will be no black line on the gums for life. Perfect biocompatibility, no redness. The application of brand-new technology breaks through the traditional orthodontic technology and experiences comfort. The whole process adopts international advanced technology and precision equipment, which makes the treatment more detailed and accurate and the teeth more beautiful. Because of its precision and advanced technology, "Meiguan" has become the "nemesis" of failed porcelain teeth. Dentists reminded that there are many methods of orthodontics, such as wire orthodontics, porcelain teeth, beauty crown and so on. Although the effects of wire orthodontic treatment and porcelain orthodontic treatment are good, teeth need to be extracted and ugly braces should be worn after operation, although it is not recommended. The beauty crown is different. Beauty crown is a new type of tooth cosmetic technology, which has the characteristics of painless, short time and quick recovery without tooth extraction. I suggest you click on the online experts to learn more, so that you can make your teeth neat and white quickly and effectively.