The truth about teeth whitening gum Of the many teeth whitening products and teeth whitening kits available in the market today, there is now a chewing gum composition formulated for teeth whitening. A tooth consists of an inner layer (dentin) and an outer protective layer made up of hard enamel. The enamel layer in its natural condition is opaque white or slightly off white in color. It is the enamel layer that becomes discolored or stained due to many factors. The enamel layer of the tooth is made of mineral crystals, and has a surface that is somewhat porous. The porous nature of the enamel allows discoloring substances and staining agents to permeate the enamel and cause discoloring of the teeth. Many of the substances that we come in contact with every day, can View the rest of this article
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