How to choose a good tooth whitening system in London

Dental bleaching done at home with supermarket products-Although ingredients may be the same, most supermarket products are not properly calibrated for different tints of teeth. This can only be done by a dentist who can accurately judge the amount of time and strength of product required to whiten your teeth. Some supermarket products may cause extreme gingival sensitivity or even tooth discoloration due to the strength of the bleaching agent.