Have you ever wondered why a tooth may remain sensitive after treatment?  Although, this is not that common it does happen.  Usually the tooth being treated has a history of a cavity or old filling.  Any time you treat a tooth it causes trauma to the nerve.  There is always a chance that this trauma is enough to make a tooth sensitive.  In most cases this sensitivity will subside as the nerve of the tooth recovers.  If not it probably means that the nerve of the tooth was already compromised from the cavity.  There may be some minor palliative measures that can be taken by our office to help the tooth recover.  If the tooth is being crowned we may elect to cement the crown with a medicated temporary cement to give the tooth time to recover.