Instruments are used to examine, clean, cut, and help to restore teeth. The main types of cutting instruments are either hand-held or rotary instruments driven in a handpiece. Other equipment includes fibreoptic lights for illumination, light-curing systems used for polymerization of resinbased materials (such as; composite materials), new instruments for tooth-cutting/ caries removal, and ultrasonic scalers. These instruments may be reused after suitable decontamination and sterilization procedures, or else are disposable, single-use items.............