Aim: Clinical and CBCT evaluation of the impact of MTA used by two different techniques (revascularization and apexification) in immature non-vital permanent incisors on root length, bone density around root apex and PDL space volume.
Material and methods: Immature permanent incisors with irreversible pulpitis or necrotic pulp were selected and randomly divided into 2 groups; revascularization group (Group I) and apexification group (group II). After complete rubber dam isolation, access opening was done for the selected incisor. 2.5% NaOCl then sterile saline and water were used for irrigation of pulp chamber with the same sequence. Triple antibiotic paste (TAP) was administered for root canal sterilization. In group I (revascularization) bleeding enhancement was done, and MTA material was performed over the formed blood clot while in group II (apexification) the whole root canal space was filled with MTA. Finally, pulp chamber was filled with GIC filling in both groups. Conclusions: Revascularization and MTA apexification techniques resemble in all clinical criteria while different in bone density and PL space.