Various prosthodontic techniques have been proposed to improve accuracy and minimize errors that may occur throughout the process of fabricating implant supported fixed prosthesis. Verification devices are one of the approaches to ensure accurate reproduction of intraoral implant positions, the device can be either a cast that reproduces implant positions in the patient’s mouth without the depiction of the intraoral soft tissue, or a jig that is fabricated by splinted impression copings fixed on master casts. What are verification casts and jig? What materials are utilized in their fabrication? And which is the most accurate?