Perception of pain using different size of needle gauges

Since the inception of pain in, the field of dentistry has had the challenge of trying to render a painless experience for the patient. The fear of pain attributed to anesthetic needle injection has been stated as an obstacle in providing appropriate dental care. A variety of patient management techniques have been attempted to improve patient comfort during dental anesthetic administration, including but not limited to smaller gauge needle sizes, slow computer-regulated administration, distraction techniques, vibrating devices, and topical anaesthetics .