An interesting article from NYT. The article is intended for lay people seeking whitening. It is good to know what they are being told however in some ways the comments are even more interesting. Everyone it seems has an opinion, often a wrong opinion, never the less they feel compelled to share it with the world.
Some dentists also use heat or even lasers to activate bleaching agents. But a 2007 systematic review of evidence in the journal Dental Materials found no added benefit from heat, light or lasers and suggested these methods “may have an adverse effect on pulpal tissue,”
The article states that so called jump start techniques like adding lasers or heat to whitening are often little more than marketing hype that adds little or no benefit.