Single tooth whitening is used when a tooth has been root treated and has discoloured as a result. A small hole is drilled into the back of the tooth, the root canal is sealed and the bleach is placed in the cavity. The bleach is then left in–situ for up to 1 week to allow it to whiten the discoloured tooth.
This is generally very successful however, sometimes if the desired result cannot be achieved a veneer or crown can be fitted returning the tooth to its original colour.
(For both full arch techniques there can be subsequent tooth sensitivity which generally only lasts 12-24hrs. Results can also vary depending on the type of staining or discolouration present. Most patients however achieve an excellent result with a brighter, fresher smile at the end of treatment.)