The cost of teeth whitening varies from place to place, probably between a few hundred dollars to thousands of dollars. 1. Smoking, drinking strong tea or eating colored foods can cause exogenous staining of the teeth, which can be removed by scaling, also known as ultrasonic cleaning, to remove the pigmentation on the surface of the teeth. After scaling, polishing or periodontal medication is needed, and the cost ranges from a few hundred dollars. 2. If the teeth themselves are yellow, scaling is difficult to change the color of the teeth, you can carry out teeth whitening, such as cold light whitening or teeth inside and outside bleaching. The cost of teeth whitening is relatively high and may range from thousands of dollars. So the cost of teeth whitening is about a few hundred dollars or thousands of dollars, the specifics need to go to the local hospital stomatology department to consult.