This Is How Bacteria in Your Mouth Cause Tooth Decay
You probably have a vague idea that tooth decay is caused by eating sugar rather than brushing your teeth, but what exactly happens in them? This video introduces the bacteria in the mouth that cause tooth decay and the beneficial bacteria that surround the ecosystem.
For the most part, germs in the mouth are good. For example, they prevent the spread of other microbes. But some of these microbes eat sugar and release acid as a byproduct. Brushing your teeth reduces bacteria to a minimum, and avoiding sugary foods reduces the likelihood of acid production. Since holes in teeth are caused by acid, this is good advice to follow.
What Really Causes Tooth Decay | General Science