What is the function of a cover screw during the healing phase of an implant?

• A. To enhance aesthetic outcomes
• B. To protect the implant and prevent bone growth into it
• C. To connect the implant to the abutment
• D. To position the implant accurately

Answer: (B)

The cover screw serves a crucial role during the healing phase of an implant by protecting the implant from contamination and preventing bone growth into it. When an implant is placed into the jawbone, it requires a healing period before any further prosthetic components, like an abutment, are attached. The cover screw is placed on top of the implant to seal it off from the external environment, which helps to reduce the risk of infection and ensure a sterile healing environment.

Additionally, by preventing bone from growing into the inner part of the implant, the cover screw allows for easier access to the implant after the healing period is over. This makes the process of attaching the abutment simpler and more straightforward. Without the cover screw, there's a risk that bone could integrate into the implant, complicating future procedures and potentially leading to implant failure.

Thus, the cover screw plays a vital protective role during the early phase of the osseointegration process, ensuring the implant remains in optimal condition for subsequent restorative steps.