The teeth whitening agents found in toothpastes are titanium dioxide, sodium hexametaphosphate and a formula patented by Rembrandt called citroxain.
Hydrated silica, also found in toothpastes is the abrasive to brush off the surface stains. JADA, the Journal of the American Dental Association, explains what toothpastes typically contain.
Whitening toothpastes contain a polishing or chemical agent rather than teeth-bleach
For instance, all Toothpastes typically contain abrasives (to remove debris and residual stain), humectants (to prevent loss of water), thickening agents or binders (to stabilize tooth-paste formulations and prevent separation of liquid and solid phases), and flavoring and foaming agents (a preference of consumers). Therapeutic agents include fluoride (contained in all ADA-Accepted toothpastes for reducing caries), potassium nitrate (to treat dentinal hypersensitivity), and triclosan or stannous fluoride (to reduce gingival inflammation), according to the Journal of the American Dental Association.
According to the Mayo Clinic, whitening toothpastes can't change the natural color of your teeth or lighten a stain that goes deeper than a tooth's surface. The ADA, American Dental Association also confirms that whitening toothpastes, with the ADA Seal of Acceptance program, contain polishing or chemical agents rather than bleaches, to improve tooth appearance by removing surface stains. I found all of these whitening toothpastes to contain a small amount of fluoride as an active ingredient.
WHITENING TOOTHPASTES
Colgate® Baking Soda and Peroxide toothpaste - contains .76% Sodium monofluorophosphate
Crest 3D Vivid White- contains .243% sodium fluoride
Crest Complete Extra White Plus Scope - contains .243% sodium fluoride
Aquafresh Advanced 2x Whitening - contains .15% sodium fluoride
Aquafresh Extreme Clean Whitening - contains .15% sodium fluoride
Rembrandt® Intense Stain - contains .24% sodium fluoride
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