No field is untouched by nanotechnology, like wise it has also restructured the field of medicine as well as the dentistry. Nano dentistry as an advanced clinical tool with the help of nanomaterials and nano devices will be able to provide comprehensive oral health care. Some of them are Inducing anaesthesia, Hypersensitivity cure, Tooth repair, Nanorobotic dentifrice, Orthodontic nanorobots, Diagnosis of oral cancer, Treatment of oral cancer etc. with ongoing developments in this branch, will offer more sophisticated methods for diagnosis, treatment, and prevention, so that a new era in dentistry is in near future. This review is focused on the recent developments, various approaches. particularly of nanoparticles, materials and its applications in the fi eld of dentistry.