Dental whitening refers to techniques to restore natural shape and color of your teeth, aiming to remove stains of consuming tea, coffee, wine and tobacco, and deal with problems such as tetracycline pigment teeth and dental fluorosis. 

One common technique of dental whitening is cold light whitening which is quite effective in coping with tooth discoloration caused by coffee, wine and tobacco. Such technique can be applied for most people and its result is set to remain for about one or two years. 

In severe cases of tetracycline pigment tooth or dental fluorosis, cold light whitening has little help and thus porcelain veneer can be applied instead. It enjoys a lot of advantages, including no change of color over time, stain resistance, scratch resistance and durability. 

In addition, you can also seek porcelain crown, a custom made “cap” placed over the tooth, to restore its shape and size. Much stronger than the veneer, it may remain working for a decade with proper installment. It performs well in function, enabling you to chew and speak more comfortably.