You may be most afraid of spiders, snakes or even heights, but tooth decay is something that everyone dreads. In the worst cases, it can lead to tooth loss, with the so-called ‘best case’ for tooth decay being a small cavity and a trip to the dentist for a filling. So, how can we prevent it? Brush twice a day, of course. However, scientists have found a new alternative to brushing that could “fill in the gaps” left by traditional methods. Most people use toothpaste to clean and protect their teeth.