Does root canal treatment work every time?
It is rare for root canal treatment to fail, however it does happen. This can be because the root system of a tooth may be particularly complex, so not all the decay is thoroughly cleared out. Alternatively, it could be because the tooth restoration – in most cases, the crown – is inadequate or not properly cemented into place, so that it allows bacteria to work its way back into the tooth. Finally, it could be that plaque and bacteria build up on the treated tooth in the same way that they built up on the original, healthy tooth – because of a lack of care and a poor standard of oral hygiene.
