The Daily Telegraph reported on July 21 that two new inventions by British scientists will make dental drills a thing of the past and the existence of toothbrushes “in jeopardy” within five years. Scientists at the University of Leeds Dental Institute said they have invented a technology that simulates the natural growth of teeth, and this technology can repair tooth decay without drilling fillings. Instead of drilling to repair tooth decay is a new protein that can repair cavities by absorbing minerals. This substance can be applied to the surface of the tooth in the early stages of decay to repair small cavities. At the same time, they invented a mouthwash that kills the bacteria that cause plaque to grow. The mouthwash uses a small molecule that can be absorbed by oral bacteria, and when activated by bright light, this molecule kills the bacteria inside the oral bacteria. This mouthwash is harmless to humans and has been put into use in the food industry, even after being swallowed by patients. (As reported by China Daily)