Dentists are trained to spot more than just cavities: These red flags of dental problems in your mouth may signal a health issue happening elsewhere in the body.

As far as difficult tasks go, brushing your teeth doesn't seem like one of them. After all, you've been doing it since you were little (we hope). And yet, it’s easier than you think to make tooth brushing mistakes, putting your oral hygiene—and your smile—at risk.

EMTs share the key steps that save precious time (and can help save your life) when you need emergency medical services.