Single implant surgery : Z1 implant Extraction and immediate placement of a Z1 implant Extraction and immediate placement of 8 Z1 implants to rehabilite the maxillary Single implant surgery with bone defect : Z1 implant Sinus Lift with a vestibular window. n°1 Sinus Lift with a vestibular window. n°2 Increase bone height in the sinus using osteotomes