The goal of brushing one's teeth is to have fresh breath and prevent cavities. But the effect of toothpaste on the complex ecosystem of bacteria in our mouths—the oral microbiome—is often overlooked.

The goal of brushing one’s teeth is to have fresh breath and prevent cavities. But the effect of toothpaste on the complex ecosystem of bacteria in our mouths — the oral microbiome — is often ...

Joe Raedle/Getty Images Another bacteria, Paracoccus yeei, was found in a batch of the company’s Wicked Cool! Anticavity Toothpaste, which is marketed toward children.

An FDA letter outlined issues with mold and bacteria at the Tom's of Maine plant where toothpaste products are manufactured.

Dangerous bacteria linked to multiple infections found in final batches of Contaminated water used to make Tom’s of Maine toothpaste.

What does toothpaste actually do? The main function of toothpaste isn’t to kill bacteria outright but to disrupt the biofilm that allows harmful bacteria to thrive.

Researchers have found a natural mouthwash that seems to kill off nasty germs while nurturing friendly microbes.

He wrote: "Toothpaste is an excellent cleaner for sinks, both in the bathroom and the kitchen. The mild abrasive in ...