1. Nanotechnology involves manipulating matter at the nanoscale, roughly the size of 2-3 atoms. It has applications in dentistry including improving dental materials and treatments. 2. Specific nanostructures used in dentistry include nanoparticles, nanorods, nanospheres, nanotubes, and dendrimers which are incorporated into materials like composites, adhesives, and impression materials to enhance their properties. 3. Nanotechnology could enable localized anesthesia via nanobots, hypersensitivity treatment by selectively occluding dentinal tubules, continuous cleaning via nanorobotic toothpaste, and improved cosmetics using stronger materials at the nanoscale. It may also transform procedures like orthodontics, implants, cancer diagnosis and