Applications of nanotechnology in dentistry are vast. They include but are not limited to dental diagnostics, preventive dentistry, dental materials, prosthodontics, endodontics, conservative and aesthetic dentistry, periodontics, implantology, and regenerative dentistry and nano-products . Nanotechnology plays also a major role in equipment used by dental practitioners such as LED light curing units , protection of dental hard tissues against acid containing foods and characterization of dental materials and dental hard tissues and many more.