How many bacteria are exchanged in a kiss? More than you think!

At Smiles by Shields, we consistently remind our patients that brushing and flossing regularly removes bacteria that can lead to tooth decay and periodontal disease. But did you know that the body naturally contains more than 100 trillion microorganisms? The organisms in this microbiome are vital for digesting food, synthesizing nutrients, and preventing disease.

It stands to reason then, that kissing offers an opportunity for partners to exchange the bacteria in their bodies and to mutually influence one another’s microbiomes. Researchers found that one ten-second kiss can transfer 80 million bacteria and that the more couples kiss, the more their microbiomes have in common.

As you prepare for Valentine’s Day, then, perhaps you can select a card that invites your partner to exchange 80 million bacteria and then book a couple’s cleaning! Contact your Jacksonville FL dentist for your cleaning appointment today.


Ellis, M. (2014, November 17). “Just one 10-second kiss transfers 80 million bacteria.” Medical News Today. Retrieved from


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3940 San Jose Park Dr.
Jacksonville, FL 32217