New whitening gel relies on free radicals

White Smile Global has introduced a teeth-whitening gel specifically designed for use with light-emitting diode or ultraviolet (UV) teeth-whitening lamps.

The system microencapsulates a proprietary activator within a teeth-whitening gel that generates free radicals when the microcapsules come in contact with saliva, according to the company. The product is self-contained and can be applied to the teeth by either dental professionals or consumers.

The whitening system is made of a highly concentrated hydrogen peroxide whitening formula and a UV photoactivator capable of liberating the free radicals, according to Martin Giniger, DMD, PhD, head of research and development for White Smile Global.

"This carrier is substantially evenly dispersed throughout a multiplicity of microencapsulated particles of an oxygen-releasing activating agent," he stated in a press release. "The walls of the microcapsules are rupturable upon mechanical manipulation or when coming in contact with saliva such as occurs during the teeth-whitening operation, and thereby conveniently releases the oxygen free radicals at the site where it is most effective."

The product will be commercially available in the fourth quarter of 2011, according to the company.

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