Caries or trauma related to pulp necrosis in an immature tooth can arrest root development, leading to thin root canal walls and blunderbuss apices. Conventional endodontic methods of treating necrotic immature permanent teeth are limited, owing to the tooth’s incomplete root anatomy. The ideal treatment for an immature necrosed tooth is to generate a healthy pulp-dentin complex, thereby allowing continued root maturation. Root elongation, thickening of lateral canal walls, and deposition of new dentine make regenerative endodontic procedures a better treatment option than traditional apexification. In this report, we present two cases of regenerative endodontic procedures in immature premolars that became necrotic due to dens evaginatus.