What is the difference between infiltration and nerve block anesthesia?

Infiltration and nerve block anesthesia serve distinct purposes in dental procedures, and understanding their differences is essential for effective practice. Infiltration anesthesia involves the injection of a local anesthetic solution directly into the tissue surrounding a specific area, typically aiming to numb a smaller, localized site, such as individual teeth or the surrounding soft tissues. This method is effective for procedures that involve a limited area that needs to be numbed, allowing for more precise pain management.

On the other hand, nerve block anesthesia is designed to anesthetize a larger area by targeting specific nerves that supply multiple teeth or regions. By injecting the anesthetic solution near a major nerve, the effects can be felt across a broader area, making it particularly useful for procedures that involve multiple teeth, entire quadrants, or certain surgical interventions.

The correct choice captures this fundamental distinction. Infiltration focuses on precise areas, whereas nerve blocks are intended for larger zones of anesthesia, providing a more widespread numbing effect.