Depending on how it’s used, a needle can contribute to the success of anesthesia and to whether or not the injection is painful.
Conventional anesthesia needles (triple-bevel) penetrate tissues by pulling them apart, creating pain-generating tension. The latest generation of needles (Effitec double-bevelled needles) incise tissue without tearing it, like a scalpel. They release tension and are therefore less painful.
The double bevel, when rotated, gives the needle the power to perforate, making it easier to perform intraosseous anesthesia, particularly osteocentral anesthesia. The double bevel, combined with the increased thickness of the needle wall, eliminates needle deflection, the main cause of failure in truncal anesthesia.
Each anesthesia technique has its own specific needle, which reduces pain on penetration and improves results.
