The dentist uses these syringes to administer the anesthetic solution. And it is also used to supply water, compressed air, or mist to the oral cavity for cleaning debris away from the area the dentist is working on.
These special syringes are designed to refill after each injection from a built-in reservoir to give several dosages using the same syringe. These types of needles are rarely used due to a risk of contamination.
This syringe has a threaded tip so that the needle can be twisted and locked into the place. It assures a secure connection and prevents accidental removal of the needle and injection of the medicine. It offers clear visual and audible confirmation of the locked position.
These syringes are commonly used while administering medication parallel to the skin of the patient. They are mainly used for the aspiration of fluids that requires closeness to the skin. These syringes are perfect for injecting into a surface vein and not penetrating both vascular walls of the vein.