The literature is replete with the various techniques used in the restoration of pulpless teeth. Controversies surround the most clinically successful procedures and general dentist is confronted daily with the dilemma of choosing the best treatment modality. Endodontically treated posterior teeth present restorative problems. The remaining tooth tissue requires special treatment to prevent further destruction. This report presents an effective method for succeeding extension and protection for endodontically treated teeth. The advantages of the post-core system against other types of restoration, as well the indications are reviewed. In this paper the preparation of the tooth and the construction of a post-core by the direct and indirect method are described.