An accurate impression is mandatory for the success of implant-supported dental prosthesis as an accurate recording of spatial implant position is required to obtain proper support to definitive restoration with passive fitting. Benefits of Impression in implant dentistry is to record; Position, Depth, Axis/Angulation, Rotation-Hex position, Soft Tissue Contour (Emergence Profile). This book summarizes all the major impression techniques and materials used in oral implant therapy.