Which of the following injection techniques targets terminal nerve endings?

Infiltration injection techniques are specifically designed to target the terminal nerve endings in the area where the injection is given. This method involves depositing anesthetic solution into the tissue surrounding the area to be treated, allowing the anesthetic to diffuse into the nerve endings directly. By doing so, it provides localized anesthesia to the dentition and surrounding soft tissues.

This technique is particularly effective for procedures involving areas such as the maxillary teeth, where the nerves are more superficial and easily accessible. The anesthetic affects smaller, terminal branches of the nerves, leading to effective pain control in that localized area.

Field blocks and nerve blocks, while also used in local anesthesia, do not focus on terminal nerve endings in the same way. Field blocks involve anesthetizing a larger area by blocking the main nerve branches, and nerve blocks aim to anesthetize specific nerves at a deeper level, impacting larger sections rather than just targeting the terminal endings. Intravenous injection does not pertain to local anesthesia but rather systemic delivery of anesthetic agents, further distinguishing it from infiltration techniques.