Microrobots designed by researchers at the University of Pennsylvania aim to revolutionize dental hygiene. These tiny robots offer an automated solution for brushing and flossing teeth, eliminating harmful bacteria and plaque, and providing a modern alternative to traditional manual methods.

These microrobots are made of iron oxide nanoparticles with magnetic and catalytic properties. When exposed to a magnetic field, they assemble into structures resembling brushes or elongate to act as dental floss. Their catalytic activity also produces antimicrobials that effectively disrupt plaque biofilms and harmful oral bacteria.

The microrobots can adapt to various tooth surfaces, ensuring thorough cleaning even in hard-to-reach areas. They are particularly beneficial for individuals with limited dexterity, such as the elderly or those with disabilities. Additionally, they help prevent cavities and gum disease by effectively removing biofilms and bacteria.

Studies using 3D-printed tooth models and real human teeth demonstrated that the microrobots successfully removed all detectable pathogens without damaging gum tissue. The use of FDA-approved iron oxide nanoparticles highlights the safety of this technology for clinical applications.

Researchers are working on improving the microrobots’ movements and designing mouth-fitting devices to bring this technology into clinical settings. The ultimate goal is to create a fully automated system that adapts to the unique features of an individual’s oral cavity, providing personalized and efficient oral care.