Many people who have their teeth cleaned initially want to get whiter teeth after the cleaning, but after the cleaning, they find that their teeth are not white because the cleaning is actually washing away the calculus, pigment and plaque on the teeth. If you are a regular smoker or tea drinker, your teeth will be more pigmented and may look whiter after the cleaning. If you have good habits, don’t smoke, and have less pigmentation, you won’t be able to change the color too much after the scaling. Similar to washing clothes, white clothes can be washed white when dirty, but other colors will not be washed white. If patients have the need to make their teeth white, they can provide cold light whitening, laser whitening and other methods, but it is impossible to make teeth white by scaling. The reason why people in Europe and the United States have whiter teeth after scaling is that yellow people actually have yellow teeth, while white people have whiter teeth as well as their skin color.