All methods of tooth whitening are very similar. A gel containing a form of peroxide breaks down to oxygen and water. The free oxygen generated attaches to stains and lifts them out of the teeth. The differences between techniques and overall results depend upon the aspects below. |

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Clinical Evaluation of a combined Whitening Approach |
Using both in-office and take-home whitening in a combined approach provides predictable and enhanced results over the techniques by themselves. This is the basis of Deep Whitening and the core of our Brilliant White technique. |
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Light Augments Tooth Whitening with Peroxide |
So what about those lights? This is one of the only studies that show any effectiveness of the whitening light. Unfortunately, it was financed by one of the companies which manufacture the light and has been somewhat controversial. To our knowledge, the results of this study have not been independently duplicated. |
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Clinical Evaluation of a Novel Lamp and Gel |
This is another manufacturer study showing efficacy of their light system. We have not seen independent evidence to back this up. |
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Vital Bleaching - What do lights add? |
This study concluded that the lights used in three systems were not responsible for the whitening effect, rather the gel catalyst increased the speed and effectiveness. |
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Bleaching Efficacy Using Different Light Sources |
Internal bleaching was performed with several different lights and without a light source. The results showed no difference between them. |
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Comparison of Three Different Light Systems |
This paper studied three different systems and combined the techniques both with and without a light. In the end, there was no statistical difference between the light and no-light results. |
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Whitening Literature Review |
Acceleration by heat, light or laser may have an adverse effect on teeth and there is no final judgement of whether or not they work. |
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Safety Study of High Hydrogen Peroxide Concentrations |
This paper concludes that even very high concentrations of whitening gel have no effect on tooth enamel. Moreover, any evidence of damage is likely attributed to non-buffered, acidic gels like you might find in some over-the-counter products. |
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The Whitening Debate; JADA |
This JADA editorial shows how much controversy there is over this very topic.There is a general consensus that manufacturer studies are inherently biased. They are the only studies to date that I know of which show significant efficacy of the light when used for whitening. Until there is a comprehensive and independent review which shows otherwise, it would seem prudent to use a multiple visit combined approach for predictable whitening results. |