[The self-aspirating syringe in local anesthesia]

Dentists routinely inject local anesthetic solutions in their daily practice. However, it is important not to inject intravascularly. Consequently, manufacturers offer two types of dental syringes: one with a mechanical aspirating device (harpoon) and the other with a self-aspirating mechanism. We have verified the efficacy of a self-aspirating syringe as presented on the market and another self-aspirating syringe which we lightly modified.