Oral Probiotics and Gum Health: What We Know and What We Do Not

What are oral probiotics?

They are live bacteria, often sold as lozenges or chewables, meant to support the balance of bacteria in the mouth. Strains such as Lactobacillus reuteri and Bifidobacterium lactis are the ones most often studied.

What the studies suggest

Small trials have found modest improvements in gum inflammation or plaque in some people, usually when probiotics were used alongside normal dental care. Studies differ in strains, doses and length, so it is hard to compare them.

What is proven

• Brushing twice a day with fluoride toothpaste
• Cleaning between teeth daily
• Regular dental cleanings and checkups
• Not smoking and limiting sugary snacks and drinks

See how we review one oral probiotic in our independent ProDentim review.

Who should be careful

People with weakened immune systems or serious illness should ask a doctor before any probiotic. If you have bleeding gums, loose teeth or mouth sores, see a dentist.

Sources to read next

• American Dental Association (MouthHealthy) pages on gum disease
• NCCIH page on probiotics

This article is for education only and does not replace advice from your doctor or pharmacist. Healthnilo earns commissions from some links on this site; see our Affiliate Disclosure and Editorial Policy.

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