The management of an immature tooth with pulpal necrosis and periapical pathology poses a great endodontic challenge. Treatment options comprise the conventional apexification procedure with and without apical barriers. The use of an apical barrier in cases with open apices has gained popularity in recent years. The conventional apexification using calcium hydroxide has certain drawbacks such as the need for long term therapy to enable barrier formation. The recent trend is to form a fragile dentinal bridge as an artificial apical stop. Even though the current gold standard material for the apical stop is Mineral trioxide aggregate (MTA), a large number of novel materials have been studied for this purpose. Biodentine is a new calcium silicate based material, recently introduced as a dentine substitute, applicable whenever original root dentine is damaged. Biodentine was chosen for apexification because of its superior physical properties including short setting time, solubility, and easy handling characteristics. This case report describes single visit apexification in a maxillary central incisor with a necrotic pulp and an open apex using Biodentine as an apical barrier. The successful clinical outcome in this case is encouraging for the use of Biodentine as an apical plug in single visit apexification procedures.