What is the purpose of using a cover screw on an implant?

The purpose of using a cover screw on an implant is to allow for tissue healing over the implant. When an implant is placed in the bone, the cover screw is used to seal the top of the implant, preventing bone and soft tissue from entering the implant itself during the healing process. This healing phase, known as osseointegration, is crucial for the success of the implant, as it allows for proper bonding between the bone and the implant surface.

Having a cover screw in place during this phase helps maintain a clean environment at the implant site and prevents any foreign materials or excessive cellular infiltration that could compromise the healing process. Once adequate healing has occurred and osseointegration is confirmed, the cover screw is removed, and the abutment can be attached for the final restoration.

In contrast, while other options relate to various functions surrounding the implant, they do not accurately reflect the specific role of the cover screw in facilitating tissue healing. The cover screw does not provide retention for the abutment, facilitate immediate loading, or directly reduce infection risk, although maintaining a clean environment can indirectly contribute to minimizing infection.