How to align Digital Analog to 3D printed model of dental implant | CAD CAM Digital Planning. When you using CAD CAM, you need to have a good and accurate model. For example, a PFM restoration. When you are making a PFM restoration, the technician who designs the porcelain needs to have a metal design to be base on. Then, you need good digital analogs, and they need to fit correctly to the model you are printing. Different companies have good digital analogs, but every technician uses a different material, a different printer and you always have some deviation between the analogs and the models themselves. We’ll explain how to solve this problem with our special libraries.