It is no harder to replace a chin implant with a screw than it is to replace one that does not have one. The presence of a screw is an inconsequential issue in the surgery.
Exchanging silicone chin implant
It is possible to exchange a silicone implant. A full set of photographs are required to make a determination about the need to go to a large implant, since that's usually pretty rare. It's also important to wait longer than 3 months to make sure that all the residual swelling has subsided before revising the previous implant. Removal of the old implant and placement of a new implant either larger or smaller is not that difficult, as long as the surgeon has lots of experience with chin implants. In our practice we be usually perform chin implants under local anesthesia without screw fixation. It is also very important that the surgeon has the appropriate screwdriver to remove the screw that was placed in the first implant.