Complex sentence: Endodontic therapy or root canal therapy is a sequence of treatment for the infected pulp of a tooth which results in the elimination of infection and the protection of the decontaminated tooth from future microbial invasion.
Split into simpler sentences: Endodontic therapy or root canal therapy is a sequence of treatment for the infected pulp of a tooth. A succesful therapy results in the elimination of infection and the protection of the decontaminated tooth from future microbial invasion.