Tetracycline teeth whitening, depending on the method used. If the whitening is done by bleaching, the cost for mild tetracycline teeth is around $2000-3000 mainly depending on the treatment. If the teeth are restored by means of porcelain veneers, all-porcelain crowns or porcelain crowns, the main difference lies in the different materials used for restoration, and the price is also differentiated according to the number of teeth to be restored, with the price of a single tooth ranging from more than 1,000 yuan for ordinary porcelain crowns to more than 6,000 yuan for all-porcelain restorations, the price range is still relatively large. The prevention of tetracycline teeth is mainly based on the mechanism of tetracycline tooth formation, it is recommended that pregnant women or children before the age of 6-7 years, avoid the use of tetracycline drugs. Tetracycline will be deposited into the dentin layer, forming tooth staining, after the age of 7 years, permanent teeth development is basically formed, the use of tetracycline will not cause tooth staining problems.