Evidence guide
The Oral Microbiome: A Clear Guide to the Ecosystem in Your Mouth
What the oral microbiome is, why balance is more complex than “good vs bad bacteria,” and how to interpret supplement claims.
Your mouth is an ecosystem
The oral cavity contains diverse microbial communities living on teeth, tongue, gums and other surfaces. Their behavior changes with saliva, diet, hygiene, smoking, medications and many other factors.
Why “kill bad bacteria” is too simple
Oral health is not achieved by sterilizing the mouth. Ecological balance, plaque control and host factors matter. Marketing that describes every bacterium as an enemy oversimplifies a complex system.
Where supplements fit
Probiotics and other products are being studied, but evidence is strain- and outcome-specific. They should be evaluated as adjuncts rather than universal fixes.