Where is an intraligamentary injection placed?

An intraligamentary injection is specifically designed to deliver anesthesia directly to the periodontal ligament surrounding a tooth. This technique allows for a more localized and effective numbing effect for dental procedures, particularly in cases where conventional injections may not provide sufficient anesthesia. By placing the injection around the periodontal ligament, it helps to block the sensory nerves supplying the tooth, resulting in effective pain control during procedures such as tooth extractions or restorative work.

The other options reference sites that do not correspond to the technique. The dental pulp is not the target area for this type of injection, which instead focuses on the periodontal ligament for immediate and localized effect. Injecting on the gingival surface or in the buccal vestibule may not achieve the same level of specificity and effectiveness for anesthesia as the intraligamentary approach does. This is why option A is the most accurate in regards to the placement of an intraligamentary injection.