Tiny dental nanobots generate heat to deep clean the teeth

The buildup of bacteria deep in our teeth can cause infections in difficult-to-reach areas, and scientists at the Indian Institute of Science have developed a set of tiny cleaning robots they believe are up to the task. The nano-sized machines can be steered with a magnetic field into microscopic channels in the teeth and kill bacteria with heat, offering a safe and potent way to improve the success of standard root canal treatments.