Multi Unit Impression copings are dental implant components used to capture an impression of the implant site in the patient's mouth. They are placed on top of the implant fixture and allow for the transfer of the implant's position and orientation to the laboratory. The impression copings come in different shapes and sizes to match the various implant systems and abutment connections. After the impression is taken, the coping is removed and replaced with the implant's permanent abutment, which attaches to the implant fixture and supports the final restoration. Impression copings play a critical role in the accurate fabrication of dental implant restorations, as they ensure that the final prosthesis fits precisely and functions properly.