Safety goggles are recommended to protect eyes from which type of foreign objects?

Safety goggles are specifically recommended to protect the eyes from flying amalgam, as this type of foreign object can be a significant risk in dental practices. During dental procedures, amalgam may be introduced in a way that causes small particles to become airborne due to mechanical instruments or the mixing process. These particles can enter the eye and cause injuries.

Using safety goggles creates a protective barrier that can help prevent such occurrences, ensuring that dental professionals and patients alike minimize the risk of eye injury from these potentially harmful, small projectiles. While the other options involve risks in a dental environment, the specific protection provided by goggles against flying amalgam stands out most prominently in this context.