Currently, available devices designed to prevent injuries from needles are typically intended for general-purpose needles and are not suitable for dental anesthetic needles, which have sharp tips on both ends. Therefore, researchers have developed a safety device specifically for dental anesthetic needles. This device is designed to protect the sharp ends of dental anesthetic needles, thereby preventing and reducing the risk of accidental injuries during procedures. Additionally, the device securely holds the needle hub in place, preventing it from slipping during use.