(NewsUSA)
- A whiter, brighter smile remains one of the most desirable dental improvements, but many consumers are concerned about commercial tooth-whitening products, especially those with sensitive teeth.
The high levels of peroxide in many commercial whitening systems are effective, but can cause or increase tooth and gum sensitivity. Peroxide penetrates tooth enamel to break down stains, but generates free radicals which can irritate the nerves inside the teeth, promoting sensitivity that lasts for days. In addition, improperly applied peroxide-based whitening products can irritate the soft tissue of the gums, causing redness, pain, or a burning sensation.