Many people have superficially discoloured teeth as a result of trauma, illness, the use of particular antibiotics during childhood or excessive fluoride consumption. One of the most conservative treatments for discoloured teeth is micro-abrasion. It’s particularly successful at removing dark or brown stains, and white flecks are usually markedly improved.

The treatment involves simply rubbing the stained area with an abrasive compound of pumice mixed with acid, which removes a very small amount of the tooth surface – usually only 50 to 150 micrometres. The result is permanent and needs no further treatment.