For a number of reasons you and your doctor may decide a tooth extraction is necessary. In this case the...
When a tooth becomes badly decayed the root may become infected as well. The dentist will evaluate the x-ray and determine if the root is involved. Once this has been diagnosed he will complete the root canal.
The dentist will begin by numbing the area of the tooth. Once the area is numb the dentist will create a small opening in the crown of the tooth and remove the infected root completely, cleaning each canal. Once completely cleaned and shaped the canals are sealed with putty like material and a temporary filling will be placed until a complete restoration is scheduled. A crown will then be placed to maintain normal function of the tooth.