Where are you? Prices vary greatly from city to city.

I provide Beijing for your reference (ordinary dental clinics):

Tooth cleaning: 200-300 (I know that 50-100 is enough in small cities)

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Correction: It depends on how long your correction takes. Basically, the phone bill for the six-month correction period is around 800-1,000, but it does not mean that the one-year correction period is 1,600-2,000. Over time, there will be relatively discounts. .

Dark spots on the face: Never trust beauty salons or private clinics. It is best to go to the cosmetic department of the hospital or the plastic surgery hospital. Recommended public hospitals, guaranteed. The price depends on which method you use and how many black spots you have. If it's not a lot, 2000 should be enough.