The latest, most expensive method is laser tooth whitening, in which a hydrogen peroxide solution painted onto a patient's teeth is subjected to a strong light that speeds up the lightening process.

"Kind of a pain to 'let it dry' on your teeth. I usually end up using my hair dryer to speed it along." A final shopper ...

Dr James Martyniak, who is part of the team at Rifkin Dental in Carmel, New York, says whitening paste is largely ineffective ...

A number of beauticians in London are performing illegal teeth-whitening procedures, which can leave patients in crippling pain if they go wrong. One place was secretly filmed by BBC London using ...

Upon investigation, the dark marks seemed to be the result of fluorescent whitening agents in the paper. It appears they are overloaded or otherwise changed chemically by the laser, and slowly ...

Bad Taste in Your Mouth A bad taste in your mouth might be a warning sign that your wisdom teeth are causing trouble Decay in ...