Teeth yellow teeth cleaning if it is due to pigment attached to the surface of the teeth, then the effect of scaling is better, if it is due to endogenous factors caused by the yellow teeth, scaling to remove the yellow effect will be worse. Scaling is the use of scalers to remove plaque, stains and tartar from the gums and polish the surface of the teeth to delay the redeposition of plaque and tartar and restore the original color of the teeth. If the yellowing of the teeth is due to exogenous factors, then scaling is more effective in removing the pigmentation attachment thereby restoring the original color of the teeth. However, if the yellowing of teeth is caused by endogenous factors, such as fluorosis, tetracycline, etc.. In this case, the effect of scaling to remove yellowing will be worse, because scaling can only remove the surface of the attached material such as pigment, plaque, tartar and so on. Teeth yellowing caused by endogenous factors can be whitened by methods such as bleaching or cold light whitening. If a patient has yellowed teeth, he or she should go to a hospital dentist to find out the cause and choose scaling or other methods to improve the yellowing of the teeth under the doctor’s advice.