Study Conclusions

Whitening with LED light works best.

The source of irradiation is more relevant than the bleaching agent for efficient tooth whitening. In addition, photo activation with LED was found to be the best choice: it yielded significant change in color with only a minor increase in pulpal temperature.

Carbamide peroxide last the full 20 minutes.

The degradation rate of CP during the bleaching process is biexponential. In the tray and teeth samples, the degradation rate was accelerated during the first hour. Further research is needed to determine the cause of this acceleration.

Carbamide peroxide removes plaque and heals gums.

Tray-applied 10 percent CP may hold great promise for improving the oral health of many special-care patients, including elderly patients, patients with cancer and patients with dry mouth. Further research is needed to verify the potential benefits, specifics of treatment times and protocols and most cost-effective products for use in various patient groups. Application of 10 percent CP in a custom-fitted tray may reduce caries by elevating the pH above the level at which the caries process can occur, in addition to debriding the teeth and improving gingival health.

PH neutral peroxide does not harm enamel.

The use of a 38 percent hydrogen peroxide in-office whitening agent induced no roughness alterations of the enamel surface, even after prolonged and repeated applications.

Xylitol helps enamel.

After 10 days of erosive pH cycling, both xylitol varnishes and solutions significantly reduced the enamel erosion when compared with the control. However, 10% xylitol solution produced a smooth layer on eroded enamel and significantly reduced the enamel erosion when compared to the placebo varnish/control. Xylitol thus appears to be a good option to partially reduce enamel erosion.

Tooth whitening is safe.

Tooth whitening is a form of dental treatment and should be completed as part of a comprehensive treatment plan developed by a dentist after an oral examination. When used appropriately, tooth-whitening methods are safe and effective.

Light and peroxide works best.

Peroxide and light treatment significantly lightened the color of teeth to a greater extent than did peroxide or light alone, with a low and transient incidence of tooth sensitivity.

LED produces no heat.

A specific combination of bleach and light that demonstrates good color change and little temperature rise should be selected for in-office tooth bleaching.

Red LED light heals gums.

Dr. Whelan’s NASA-funded research has already seen remarkable results using the light-emitting diodes to promote healing of painful mouth ulcers caused by cancer therapies such as radiation and chemotherapy. The treatment is quick and painless.