The prosthetic project in implantology is a diagnostic process that prefigures the aesthetic, functional and occlusal parameters in a correct static and dynamic context (occlusion plane, vertical occlusion dimension, occlusal curves, lip support...). For simple prosthetic projects (one or two missing teeth), treatment planning is relatively easy. For complex projects, a more detailed analysis is necessary to anticipate and predict on models and/or in the mouth, the position of future prosthetic, by using various "models" or "guides". Fully digital planning can also be used in some situations. The concept of computer-assisted implantology nowadays provides undeniable diagnostic and therapeutic support in response to the increasing demands of partiel edentulous patients.