Which instrument is used to inject anesthetic during dental procedures?

The anesthetic needle is specifically designed for the purpose of delivering local anesthetic agents into the tissues of the oral cavity during dental procedures. This instrument, typically attached to a syringe, allows for precision in administering anesthesia to specific areas, ensuring that patients are comfortable and pain-free during treatments. The design of the needle and its ability to create a controlled insertion point are critical for effective anesthesia, as they minimize discomfort and allow for the anesthetic to be delivered accurately to the nerve or targeted tissue.

In contrast, the other instruments serve different purposes. Rubber dam forceps are used for the placement of rubber dams, which create an isolated field in the mouth, facilitating a dry working area. A scalpel is employed for making incisions in soft tissue, typically for surgical procedures rather than for anesthetic delivery. The cotton roll holder is utilized to secure cotton rolls in place, serving functions like absorption of saliva, but it does not play a role in anesthetic administration. Thus, the anesthetic needle is essential in the context of providing local anesthesia, making it the correct choice.