Implant prosthetics (sometimes also called "superstructure") means implant-supported dental restorations, i.e. crowns and bridges in previously toothless jaw parts. Implants ("artificial tooth roots") are placed here first.
These can be fixed (with a screwed implant):
Accuracy of fit: Marginal gap between bridge
and implants only some µm (1/1000 mm)
Prosthesis on a bar on which implants are screwed: