A dental syringe is widely used in most of dental treatment for giving local anesthesia to patients such as in root canal treatment and in common tooth extraction. It consists of a head, a tip, cartridge and a releasable coupling. It is widely used in dentistry and included in critical instruments as it penetrates in tissues and get contaminated with blood and saliva. The transmission of pathogens from one patient to another via contaminated devices has been high profile issue in infection control so it is necessary to sterilize it properly. The Cobalt-60 as gamma radiation source is used for...