A review on the applications of nanotechnology in orthodontics

Objective (s): Nanotechnology has gained importance in recent years due to its ability in the enhancement of materials properties and other specifications such as antimicrobial properties. Nano-sized materials have been applied in various fields of dentistry. Nanotechnology can be employed in orthodontics to enhance the quality of treatment. In the current study, a comprehensive review is carried out on the applications of nanotechnology in orthodontics. Materials and Methods: In the first step, various databases such as Scopus, Google Scholar and Pubmed were searched by using appropriate keywords for the present study. Afterwards, the related resources were selected to be reviewed. Finally, the key findings of the reviewed studies were represented and summarized. Results: Based on the reviewed researches, nanotechnology is applicable in various aspects of orthodontics. By using nanotechnology, improved properties in mechanical and medical specifications are achievable. For instance, by using nano coating in archwires, the friction force between components can be reduced and facilitate its motion. In addition, adding some types of nano particles to the composites resulted in improvement in tensile and shear bond strength. Antimicrobial properties of specific nano particles such as silver makes them favorable for reducing microorganisms in orthodontics treatment. Moreover, nanotechnology can be used in nano-identation test to assess the tools employed in orthodontics. Conclusion: nanotechnology can be broadly employed in orthodontics to achieve better treatment including improved strength of utilized materials, more accurate positioning and reduced microorganisms.