Yellow teeth can go to dentistry for scaling, which can help restore the white color of the teeth to some extent but scaling cannot make the teeth white. The reason for yellowing teeth is divided into two kinds, one is endogenous coloring, the other is exogenous coloring, and the effect after scaling is also related to the cause of yellowing teeth. 1, exogenous coloring: mainly due to the teeth around the tooth calculus, soft tartar, plaque, tobacco plaque or other factors that lead to yellowing teeth, after the ultrasonic shock during the scaling, wash away the attachment on the teeth. The color of the tooth itself will be revealed, if the tooth itself is white, after scaling the tooth will return to its original color and look white, but it can not really wash the yellow teeth white; 2, endogenous coloring: such as genetic factors, drug factors, and excessive fluoride in drinking water may also lead to dental fluorosis, white chalk color, brown plaque on the tooth surface, or periodontal disease caused by the necrosis of the dental nerve pigment and bacterial The combination of endogenous staining caused by periodontal disease, such as the combination of decomposition products, these factors can not make teeth white by scaling. If you need to whiten your teeth, you can go to the dentistry department of a regular hospital and choose cold light whitening, laser whitening, dental veneers, full crown restoration and other methods to whiten your teeth according to the cause of yellowing. In addition, it should be noted that scaling cannot treat dental diseases, but can only relieve the stimulation of plaque on periodontal tissues and thus relieve periodontal inflammation. Therefore, if oral diseases are found, timely consultation is needed to avoid aggravation, for example, early periodontitis is not treated in time, further development may form pathological periodontal pockets, and gradual development will lead to tooth loosening, loss, etc., resulting in tooth loss. In addition, we should pay attention to dental cleaning care in our daily life, brush our teeth regularly after meals and before bedtime, and have dental scaling and oral examination once every six months to help prevent the generation of plaque and maintain oral health.