When is the needle guard removed?

The correct answer is that the needle guard is removed after the syringe has been placed in the operator's hand. This step is crucial for maintaining safety during the administration of local anesthesia. By ensuring that the syringe is securely positioned in the operator's hand before removing the needle guard, the risk of accidental needle stick injuries is minimized.

Removing the guard too early, such as before transferring the syringe or when the syringe is still being prepared, could lead to potential accidents. The operator must have complete control of the syringe to ensure that they can safely administer the injection without jeopardizing their safety or that of the patient. Proper timing in removing the needle guard is a vital part of infection control and overall procedural safety in dental practice.