If the tooth nerve is damaged by caries or less often, by an accident, so that it has to be removed, a root canal treatment is necessary. The nerve is removed, the tooth or tooth root cleaned and disinfected and then filled with one or more synthetic resin pens. It gets a root filling.

If this treatment is carried out with the necessary care, the tooth can continue to do its job like any healthy tooth. However, after a root canal treatment, to protect the tooth, an adhesive plastic restoration or less often a crowning is necessary.