“…Any L‐temp system needs a combination of a specific reference element and a lab device (machine or table) in order to transfer the virtual planning into reality, for example, incorporation of the sleeves in the most correct position into the radiographic template. One of the first laboratory‐based systems for GIS was the Med3D‐device (Med3D, Med3D AG, Heidelberg, Germany) using a Lego® brick as reference‐element and the X1‐table for sleeve insertion …”