After administering adequate anaesthesia, all the decaying tissue is removed from the painful tooth. A small hole is made on the upper part of the tooth to access the root canals. Using endodontic instruments, the root canals are thoroughly cleaned and disinfected. The primed root canals are then tightly filled and sealed with a special material. The latest techniques include machine-assisted widening of the root canals and the use of a microscope.
After the completed root canal treatment, a filling must be applied to the tooth as soon as possible, or an onlay/crown if necessary.