This article introduces you to the factors that affect the color of teeth in detail? What are the common teeth whitening methods, scaling and sandblasting, and how do I whiten my teeth in the hospital? Q: What are the factors that can make teeth yellow and black in daily life behavior? A: Factors affecting tooth color 1, exogenous: food, coffee, drinks, tea, Chinese medicine, red wine 2, endogenous: tetracycline teeth, fluorosis, ageing tooth discoloration Q: What are the ways to darken teeth caused by long-term smoking? A: Generally speaking, some of the most commonly used methods are through scaling, and brushing is to be done every day. Q: Now in the market can also buy some of their own at home with whitening paste, these have the effect? A: There is a plastic film inside the paste, which is made of many small bubbles, the bubble contains some low concentration of hydrogen peroxide, its bleaching ability is very strong, this paste on the teeth, a strong pinch small bubble will break, the liquid flow on the surface of the teeth, to play a bleaching effect, like this kind of thing, is between medical and civilian, this has a certain bleaching effect. As whitening cosmetics, such as whitening tooth paste and some other whitening solutions, the whitening ingredients in them are subject to certain restrictions to consider its safety, so generally patients use them by themselves, there is a certain whitening effect, but there is a limit to use them to remove more serious cases. Q: What is scaling? A: Scaling is the process of breaking up the tartar stuck on the surface of the teeth through ultrasonic vibration, high frequency vibration, and then rinsing it off with water. Scaling should now be a relatively common means of health care, not only to remove the surface of the teeth pigment, but also for the protection of teeth, are very effective methods and means. Q: What is the difference between sandblasting and scaling? A: Sandblasting usually removes the pigmentation on the teeth by strong force, usually after scaling, and then removes the staining on the surface. Q: How long does the whiteness of teeth after scaling not last? A: Generally speaking, the standard operation process should be rinsing, then scaling, then polishing, then sandblasting, and finally polishing, now if the polishing step is not done properly, because in the process of scaling, the tooth surface will have a slight wear, of course, the surface is not visible, this wear pigment more easily attached. Therefore, after scaling and sandblasting, polishing must be done in order to make the surface smoother. Q: Are there any obvious disadvantages of scaling and sandblasting? A: There are mainly several disadvantages, one is that during the scaling process, the teeth will be sore, in addition if the gums are slightly swollen, the gums will recede a little when the inflammation subsides. Q: What methods should be considered for those caused by internal causes again? A: Tooth discoloration caused by internal causes is usually treated with the help of medication. There are two main types of hydrogen peroxide used: one for home use and one for medical use. The difference is that the concentration of hydrogen peroxide is different, the concentration used in the hospital is higher, to use some relative protection measures, the concentration of the home type is lower, perhaps the effect is slower, but safer. When you do bleaching at home, you go to the hospital and bite a model first, and then make a dental tray according to this model, and when you do bleaching every time, you squeeze the bleaching agent into the tray and then put it directly on your teeth. Q: These are drugs after all, are there any risks? A: Because the concentration here is relatively weak, but in the process you do, there will also be dental nerve response to external stimuli, usually feel sore teeth, there are individuals, may be some discomfort in the gums, so under the guidance of the doctor with or better. Q: How do I whiten my teeth in the hospital at present? A: The process of cold light teeth whitening, what exactly is it like. The first step is that the dentist will do an oral examination on the whitening patient to see the condition of the teeth, and will take a picture before whitening as a comparison of color in the future. The second step is what we see now, the dentist is using polishing grit to treat the surface of the teeth briefly, then the dentist will put the mouthpiece into the patient’s mouth to prepare the work. The third step, is to apply the protective agent on the gums, the dentist told us that the cover should be tight, so as to avoid direct contact of the whitening agent with the gums when the whitening is carried out, to protect the soft tissues from damage under the light curing lamp, and then put aside the wet tampon into the inner side of the lip, and then apply some lip oil for the patient, which is to protect the patient’s lips when the operation is carried out. The fourth step, this step should pay special attention, whitening patients and operators need to wear goggles, in order to avoid damage to the eyes caused by the light source. The fifth step is to mix the whitening drug into a paste, there is still something to be said about this mixing method, the whitening agent must be adjusted to a certain state before it can be used. Then it’s time for the cold light whitening coat, in this step, the dentist needs to first adjust the cold light head, so that the light head as close as possible to the patient’s teeth, and then set 8 minutes as a treatment unit, and after the machine automatically stops, use a strong straw to suck off the whitening agent on the surface of the teeth, wipe the residual whitening agent in the teeth with a cotton ball, and then reapply the whitening drug, and then irradiate with cold light for 8 minutes Then reapply the whitening medication and irradiate with cold light for 8 minutes. After almost 40 minutes had passed, the dentist took out the colorimetric plate and compared the teeth before whitening with the teeth after whitening, and the effect was really immediate. After the cold light teeth whitening operation is completed, the doctor will usually find out about the sensitivity of the patient’s teeth during the treatment, and it seems that you only need to endure a little pain to make your teeth instantly white and beautiful! Q: Why do medication and cold light work together to make teeth whiter? A: The cold light source intensifies the chemical reaction of the medication and increases its effect. Here we see an animation, this is a maxillary tooth, in the middle of the figure is the nerve, we call it the pulp, immediately adjacent to the pulp part we call it the dentin, this is equivalent to the main body of the tooth, outside the tooth essence is the enamel layer, tooth color, glossiness, completely through this layer to appear, whitening when the whitening agent to the surface of the teeth, through a special cold light source The whitening agent is placed on the surface of the teeth, and the reaction is accelerated by the special cold light source, which continuously produces a lot of catalytic effects and discolors the teeth. Q: The cold light bleaching method also can’t solve the problem, what should I do? A: Nowadays, the bleaching method can make the lighter coloring correct, if the deep coloring, even sometimes there are many defects, there are many small pits on the surface, in this case the bleaching is not suitable, if the color is not solved by bleaching, we have to use the cover method, in this case can also achieve good results. Generally speaking, there are two main types of veneers, one is resin veneers and the other is porcelain veneers, which are often used at present. Q: What is the difference between resin veneers and porcelain veneers? A: The more serious staining of the teeth, some of the patients on their own teeth color requirements are relatively high, we will use artificial materials to cover the teeth, to cover the base color, this resin veneers, is a direct operation in the mouth, porcelain veneers are taken after the model to do the record, and then made to repair the body, and then paste to the teeth. Resin veneers can have a certain degree of coverage, but because it is operated directly in the body, the gloss of the teeth has some limitations, and there is still some difference with the gloss of normal teeth, but the magnetic veneers are different, the gloss of the tooth surface is simulating the gloss of the tooth surface. Q: Is there a better way to solve the problem of some stubborn black and yellow teeth? A: The reasons for yellowing teeth are different, so there will be a choice on the way, resin veneers have some coverage, porcelain veneers aesthetic effect can achieve better, but the cost is relatively high, if very serious tooth discoloration, we usually see no nerve teeth, darker, this situation will have to resort to porcelain, we are called porcelain crowns, in order to have a stronger covering power, so that the teeth The color of the tooth is improved very well. Q: How do porcelain crowns work? A: A common explanation, the original size of the crown, the crown grinding a small layer, the space vacated, the crown with porcelain on, so also restore the original size of the tooth, but also to cover the color of the inside.