Apexification with Mineral Trioxide Aggregate: a case report.

Traumatic injuries affecting dentition of young patients can result in the interruption of development of incompletely formed roots. A permanent immature tooth can loose pulpal vitality subsequently to trauma, halting radicular growth. Necrotic pulp acts as an irritant to periapical tissues. Apical foramen remains open in a tubular or blunted form. In teeth with incomplete root-end formation associated with necrotic pulp, root canals must be completely shaped using intra-canal instruments and irrigation with 2.5% NaClO solution^12. Apexification in these teeth is mandatory due to presence of thin and fragile walls and lack of apical barrier^6.