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 This color naturalcan be affected by intrinsic stains or inside the teeth and extrinsic stains,or the outer surface of the teeth. stains intrinsic occur within the toothstructure and can be embedded within the fabric teeth. The main causes ofIntrinsic stains are: BlizzardWhite

 age, trauma, and eventhe action of some drugs such as tetracycline or fluoride. These spots, unlikethe extrinsic can not be eliminated by means mechanics. They must be removed bychemical means; whitening professional. And to maintain the whitening achieved,it is important to use a professional whitening paste. stains extrinsic

  Thursday, November 24, 2016 at 12:35:19 AM

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