1

First, tooth mineralization, such as tetracycline teeth and dental fluorosis, because drugs damage enamel, this situation is that the tooth surface is dull, yellow, gray and black;

2

The other is that people who often smoke, drink tea and coffee, or don't like brushing their teeth, form tooth stains on the surface of their teeth and turn yellow.

three

If you say that your teeth are yellow and even, you have a good habit of brushing your teeth, and you don't have the habit of drinking tea and coffee, it is probably the first one.

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Medical methods of whitening teeth

1

Porcelain teeth are grinding the teeth that need to be repaired into rods, and then fitting the porcelain teeth.

Targeted: Suitable for moderate and severe tetracycline teeth, dental fluorosis, teeth with enamel hypoplasia, cracks, defects and potholes, with obvious whitening effect.

Effective time: immediately.

Duration: more than ten years.

Advantages: the whitening effect is obvious and lasting.

Disadvantages: the teeth ground into rods are very fragile and have great damage to the structure of the teeth themselves. Moreover, porcelain teeth are expensive and are "nobles" in tooth whitening.

2

Do tooth whitening care

Tooth Beauty: Many household whitening products, such as tooth whitening set, toothpaste, whitening liquid and so on, have been introduced in the market.

Targeted: It can solve the tooth discoloration and yellowing caused by drinking tea, coffee, red wine or smoking for a long time.

Effective time: 1 ~ 2 weeks

Duration: about half a year.

Advantages: short time, quick response, convenient and safe use and moderate price.

Disadvantages: Some people will have different degrees of dentin hypersensitivity, and the effect will remain unstable.

three

Give your teeth a bath regularly.

The way of tooth beauty: tooth cleaning is to remove dental plaque such as bacteria, tartar and pigment by mechanical or physical methods.

Targeted: it can remove the pollutants on the tooth surface. It has a good effect on mild tooth discoloration.

Effective time: immediately

Duration: half a year

Advantages: Keep periodontal health.

Deficiency: the surface is only white, but the mouth will leave the taste of medicine, which is sensitive to different degrees. At the same time, there is some wear on the enamel surface.

four

Teeth should also be whitening SPA.

The way of tooth beauty: 3D directional bleaching, which can simply make a tooth mold according to the tooth shape. Whitening agent and directional enzyme were put in the dental mould every night, and then they were taken off after 20 minutes of wearing, and they were used continuously for 9 days.

Targeted: It is suitable for mild to moderate pigment teeth's hypoplasia, yellowing of teeth caused by changes of enamel with age, yellowing of teeth caused by long-term drinking tea, coffee, red wine or smoking.

Validity: 9 days

Duration: 2 ~ 3 years

Advantages: obvious effect, convenient and safe use and moderate price.

Insufficient: It can't get immediate results for tetracycline teeth and dental fluorosis with heavy colors, and it takes 9 days to get effective.

five

Ultrasonic tooth cleaning:

The main purpose is to remove dental calculus. Because dental calculus is more likely to cause the accumulation of oral bacteria, which leads to gingivitis and periodontal disease. Therefore, removing stones is a medical act. Of course, at the same time of treatment, the teeth will be whitened when the stones in the neck and adjacent surfaces are removed. Thick layer dyeing can also remove most teeth by ultrasonic cleaning; However, where there are holes, grooves or adjacent surfaces in the teeth, the stain is not easy to remove.

six

Grind the sausage cup with paste:

This is a traditional way of tooth whitening. The paste is preventive. It can remove stains from the smooth surface of teeth. Restore the teeth to their original color. However, there is still no way to remove stains on pits, grooves and adjacent surfaces.

seven

Tooth sandblasting:

A dental sandblasting processor consisting of water, air and particles can clean all stains on the tooth surface. Includes cavities, grooves and abutments on the surface of teeth.

The above methods are mainly to remove dental plaque, calculus and stain attached to the surface of teeth and restore the original color of teeth, so as to achieve the effect of cleaning and whitening. If you change the color of your teeth, I'm afraid you can use peroxide drugs to whiten your teeth.

eight

Active tooth bleaching:

Bleaching denture base with personal teeth, adding 10% hydrogen carbonate, and placing it firmly on the teeth. With the increase of drug action time, the color of teeth will gradually fade and turn white.

Its advantage is that patients do it at home. Patients can decide for themselves the number of teeth to be bleached. The number of bleaching and the time of each bleaching. And the end and stop time of the whole treatment.

Its disadvantage is that it takes a long course of treatment, about 2 weeks, to achieve the whitening effect that ordinary patients want. In addition, the drug itself is harmful to teeth and soft tissues. It is best to do it under the guidance of a dentist.

nine

Plasma tooth whitening:

It also uses peroxide drugs to coat the surface of teeth, which is inactivated by plasma irradiation and catalyzes the redox reaction of drugs to achieve the effect of tooth whitening. Each course of treatment is about 1 hour, and it must be conducted in a dental clinic. All courses of treatment are 3~5 times, achieving the whitening effect that ordinary patients want. It usually makes the upper and lower rows of front teeth, and the buccal side. Four teeth on each side, 16 teeth, up and down or so.

10

Laser tooth whitening:

It uses a high concentration of bleaching agent (H2O2 hydrogen peroxide) with appropriate laser dosage to catalyze a special catalyst to enhance the bleaching effect of hydrogen peroxide, and bleach the organic pigment in teeth from carbon ring structure to hydrophilic pigment-free structure, thus achieving the effect of safe whitening. 2 1 century, I'm afraid it's your best choice for all you who stress speed and efficiency. It's OK once. A course of treatment is about 3 hours. Similarly, it must be done in the dentist's office. There are 16 teeth in front of the upper and lower rows, with buccal side.

Although hydrogen peroxide drugs are used to treat tooth whitening. It is more or less harmful to the tooth itself and periodontal soft tissue, but it is within the controllable range, so don't worry too much. The discomfort of teeth and soft tissues will return to normal in about 3~6 days.

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Daily methods of tooth whitening

Home vinegar (old vinegar, white vinegar is ok, but not vinegar essence) is contained in your mouth 1 minute to 3 minutes, and then spit it out to brush your teeth. The effect is very good! But even the teeth will feel very sour, and the numbness (feeling will last for about 2 minutes) will not last. Do it often, about once every two months, and it will be fine. Otherwise, it's bad for your teeth. This is an emergency method (such as finding yellow teeth before going out on a date) to get rid of bad breath.

2

Dry the orange peel, grind it into powder, mix it with toothpaste and brush your teeth, and your teeth will soon turn white.

three

When brushing your teeth, using some yeast powder on your toothbrush can help whiten your teeth (a method commonly used by MODEL).

four

After brushing your teeth, wipe each tooth with lemon juice.

five

Chew raw peanuts and don't swallow them. Brushing your teeth with peanut crumbs as toothpaste can make your teeth white.

six

Use the bones of cuttlefish, crush them and put them in a toothbrush as toothpaste, which will get immediate results (cuttlefish is cuttlefish and squid. It has a big white bone. Scraping nails can produce a lot of white powder, which can be used as toothpaste to whiten teeth.