In the case of MULTI-UNIT SCREW-RETAINED PROSTHESES, with disparallel implants up to 45°, the WINSIX System provides the Flat Shift Prosthetic Line, which allows the prosthesis to be placed directly onto the implant, as well as onto the Flat Shift tissue level abutment in the event of very dense soft tissue. The Flat Shift Line also allows the construction of direct and passive screw-retained prostheses even in cases of strong disparallelism.