The challenge of the esthetic zone should follow always a predictable protocol because there is no room for the failure in this crucial area. What ever will be the complexity of the clinical situation (worn dentition, implantology), the practitioner needs to use a comprehensive methodology with a simple philosophy able to guide the treatment during the different clinical step. The purpose of this session is to suggest a precise and reproducible method that simplifies the treatment of cosmetic and functional disorder (worn dentition). A wax up and a mock-up is mostly used for designing aesthetic outcomes, and then used as a guide (preparation through the mock up or the wax up- apt for the preparation of anterior teeth). Analogic and digital workflow will be presented and compared. The technique can also be used on the posterior occlusal surfaces of the teeth. This will not only provide the exact new vertical dimension of the occlusion but also let the dentist use it as a guide for precisely controlling occlusal preparation simultaneously with buccal preparation.