Abstract: It is always a challenge to conserve a non vital tooth with immature root due to open root apices. Apexification is a method which induces a calcific barrier at the apex of a nonvital tooth with open apices.1Mineral trioxide aggregate [MTA] is an inert filling material and that is why it makes a perfect seal at the apex.Apexification treatment is supposed to create an environment that permits the deposition of cementum,periodontal ligament and even bone in a non vital pulp tooth.