This article supports what we have believed in our office for a long time. As a result, the whitening system we use and recommend is a home whitening system. We make custom trays and send our patients home with whitening gel. This is convenient and allows for much less sensitivity versus whitening done by UV light systems.
With the rising popularity of teeth whitening, new systems have been developed that use light — including halogen, curing lights, xenon-halogen lights, plasma arcs, light-emitting diodes (LEDs), lasers, and LED plus lasers — to speed up the whitening process while generating less heat, according to the study authors, from Sichuan University and Sichuan Center for Disease Control and Prevention in China.
While many manufacturers have claimed that light-activated bleaching systems can lighten tooth color by eight shades or more in just one visit and the media also has highlighted its benefits, the scientific literature remains divided, they noted.
And while some studies have shown positive effects of light activation, others have demonstrated little to no contribution to outcomes, and all the while there has been increasing focus on tooth sensitivity during light-activated bleaching.