Teeth whitening involves bleaching of teeth to make them lighter.
Tooth whitening or tooth bleaching is the process of lightening the color of human teeth.Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic color of the tooth enamel.The chemical degradation of the chromogens within or on the tooth is termed as bleaching.
Tooth discolouration and staining is primarily due to two sources of stain: intrinsic and extrinsic. In essence, tooth whitening primarily targets those intrinsic stains in which cannot be removed through mechanics such as a debridement (clean) or prophylaxis, in the dental office.
Teeth whitening options range from toothpaste with whitening ingredients to professional teeth whitening sessions overseen by your dentist.
Over-the-counter teeth-whitening kits are safe when used as directed. If you already deal with tooth sensitivity, however, you may want to think twice before using one. Even with over-the-counter products, it is still recommended to see your dentist prior to starting a whitening procedure.