Oral Health
The oral microbiome is the community of bacteria, fungi, and viruses that live on your teeth, tongue, and gums. About 700 species have been identified. Many are helpful: they keep disease-causing microbes in check, which helps protect your teeth and gums from decay and gum disease.
- Researchers have identified about 700 microbial species in the human mouth, and about 30% of them have never been grown in a lab, according to the NIH.
- In a 2018 lab study in Caries Research, Streptococcus sanguinis and Streptococcus gordonii made enough hydrogen peroxide to inhibit cavity-linked Streptococcus mutans. This is preliminary evidence from lab work, not from trials in people.
- About 4 in 10 U.S. adults age 30 or older had some level of periodontitis in 2009–2014, and about 60% of adults 65 or older did, according to the CDC.
- The American Heart Association’s December 2025 statement in Circulation reports associations between gum disease and conditions including heart attack and stroke. It states that a cause-and-effect relationship has not been confirmed.
- Among the products covered here, only fluoride toothpaste has strong evidence. A 2024 review of 11 trials found Limosilactobacillus reuteri may add a modest benefit alongside professional gum treatment.
Your mouth is never empty. Brush and floss as carefully as you like, and the microbes grow right back. The National Institutes of Health puts the count at about 700 species of bacteria, fungi, and other microbes living in the human mouth.
That sounds like a problem. Mostly, it isn’t. The same NIH report explains that the helpful microbes hold the harmful ones back, and that trouble starts when sugar and plaque let the wrong species take over.
A healthy mouth is a balanced one, not a sterile one.
This guide explains what the oral microbiome is, which bacteria protect your teeth and gums, and which ones cause cavities and gum disease. You’ll also see what the research says about links to the rest of your body, including your gut microbiome, and what you can do each day to keep your mouth’s bacteria in balance.
What Is the Oral Microbiome?
The oral microbiome is the full community of microorganisms that live in your mouth, mostly bacteria along with fungi, viruses, and archaea. These microbes settle on your teeth, tongue, gums, and cheeks. In a healthy mouth they live in balance, and the helpful species keep the harmful ones from taking over.
Everyone has one. Dr. Robert Palmer, an NIH expert on oral microbes, has pointed out that these microbes are in every person’s mouth. Some of them help you. Others can cause tooth decay and gum disease when they grow out of control.
Oral Microbiome vs. Oral Microbiota
You’ll see both words used for the same thing. In strict terms, “microbiota” means the organisms themselves, and “microbiome” means the organisms together with their genes. One review in the Journal of Oral and Maxillofacial Pathology defines the oral microbiome as the collective genome of the microorganisms living in the oral cavity.
In everyday use, the two terms are interchangeable. The same review notes that “oral microbiome,” “oral microbiota,” and the older “oral microflora” all refer to the microbes in the human mouth. This article uses “oral microbiome” throughout.
How Many Microbes Live in Your Mouth?
microbial species identified in the human mouth so far (NIH)
Researchers have identified about 700 species so far. A 2024 review in Microorganisms describes the oral microbiome as the second most diverse microbial community in the human body. Delta Dental of Minnesota notes that only the gut holds more microorganisms.
Much of that community is still a mystery. The NIH reports that about 30% of those 700 species have never been grown in a lab, and a microbe that can’t be grown is hard to study. So researchers can name most of the residents of your mouth, but they’re still working out what many of them do.
Where Do Oral Bacteria Live in Your Mouth?
Oral bacteria live on every surface in your mouth, and each surface hosts its own mix of species. A review in Nature Reviews Microbiology describes these communities as having a highly structured geography that follows the different small environments inside the mouth. A tooth and a tongue are very different places to live if you’re a microbe.
The Main Habitats
The NIH notes that some microbes stick to your teeth, others prefer your tongue, and some settle in the tiny pockets between tooth and gum. The five main habitats are:
- Tooth surfaces. Hard surfaces where sticky plaque builds up.
- The gum line. The narrow pockets where each tooth meets the gum.
- The tongue. A very diverse habitat. Dr. Cielito Reyes-Gibby, a researcher at MD Anderson Cancer Center, lists Rothia and Veillonella among the bacteria that live there.
- The inner cheeks. The same source describes the cheek lining as largely dominated by Streptococcus.
- Saliva. Saliva carries microbes around the mouth and washes away food particles and bacteria.
Tooth surfacesHard surfaces where sticky plaque builds up
Gum lineTiny pockets between tooth and gum
TongueVery diverse; home to Rothia and Veillonella
Inner cheeksLining dominated by Streptococcus
SalivaWashes away food particles and bacteria
Each part of the mouth offers microbes a different place to live, so each one hosts a different community.
What Is Dental Plaque Biofilm?
Dental plaque is the sticky, colorless film that microbes form on your teeth. It’s the best-known example of a biofilm, which is a community of microbes attached to a surface. Healthline’s dentist-reviewed guide notes that biofilms get tougher and harder to remove once they build up.
The reason is a substance the NIH calls the matrix. Mouth microbes produce this slimy, sticky material to protect themselves, and it makes plaque harder to remove. The matrix shelters helpful and disease-causing microbes alike.
Plaque also comes back. After you brush and floss, the microbes regrow and new plaque forms, which is why daily brushing and flossing matter more than any single deep clean.
Which Bacteria Protect Your Teeth and Gums?
Among the best-studied protective bacteria are commensal streptococci such as Streptococcus sanguinis and Streptococcus gordonii, along with nitrate-reducing bacteria such as Rothia and Neisseria. “Commensal” means they live in your mouth without harming you. Several of them go further and work against the species behind cavities and gum disease.
NIH researcher Dr. Robert Palmer has said it’s more useful to think about the whole community than about any single microbe. No one species keeps your mouth healthy. The balance among them does.
The Helpful Species
| Bacteria | What the research shows | Evidence Tier |
|---|---|---|
| Streptococcus sanguinis | Produces hydrogen peroxide that slows the cavity-linked Streptococcus mutans; makes ammonia from arginine, which lowers plaque acidity | Preliminary (lab studies) |
| Streptococcus gordonii | Also produces hydrogen peroxide at levels that inhibit S. mutans; breaks down arginine | Preliminary (lab studies) |
| Streptococcus parasanguinis, S. australis, S. cristatus | Isolates from human mouths inhibited the growth of S. mutans in lab tests | Preliminary (lab studies) |
| Rothia and Neisseria | Convert nitrate from food into nitrite; consistently found at higher levels in people free of oral disease | Moderate |
How They Protect You
1. They hold harmful species back. According to the NIH, good microbes help keep the growth of bad microbes in check. One way they do it is chemical.
Sugar weakens this defense. A 2008 study in the Journal of Bacteriology on the same species found that glucose reduced hydrogen peroxide production.
2. They neutralize acid. Some oral bacteria break down arginine, an amino acid, and release ammonia. According to the same Caries Research study, that ammonia can raise the pH of plaque and lower the risk of tooth decay. Cavities form in acid, so a less acidic plaque is a safer one.
Evidence Tier: Preliminary These two findings come from lab experiments, not from trials in people. They show what the bacteria can do in a dish. They don’t yet prove how much protection you get in a real mouth.
3. They process nitrate from vegetables. Your saliva concentrates nitrate after a meal of nitrate-rich vegetables. Human cells can’t convert it efficiently, but certain oral bacteria can.
Evidence Tier: Moderate Multiple studies link Rothia and Neisseria to healthy mouths, and their levels rise when people consume nitrate. The review’s authors still call for more robust clinical studies to confirm the benefit. The same pathway also affects blood pressure, which is covered in the section on whole-body health.
That’s why killing every microbe in your mouth is the wrong target. More on that in the mouthwash discussion below.
Which Oral Bacteria Cause Problems?
The oral bacteria most often linked to disease are Streptococcus mutans, which is tied to cavities, and three gum-disease species known as the “red complex”: Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola. Most of these microbes are normal residents of the mouth. They cause harm when conditions let them multiply.
| Microbe | Linked condition | What it does |
|---|---|---|
| Streptococcus mutans | Tooth decay | Turns sugar into acid that erodes enamel |
| Porphyromonas gingivalis | Periodontitis | A normal resident that can turn destructive and multiply in diseased gum pockets |
| Tannerella forsythia and Treponema denticola | Periodontitis | Found together with P. gingivalis at sites of gum disease |
| Fusobacterium nucleatum and Prevotella intermedia | Gum disease progression | “Orange complex” species that tend to appear before the red complex |
| Candida albicans (a yeast) | Oral thrush | Overgrows when the balance in the mouth is disturbed |
Cavity-Linked Species
S. mutans gets most of the blame for cavities because it converts sugar into acid, and acid destroys the tooth surface. It doesn’t act alone, though. The NIH notes that plaque holds several types of acid-making microbes, so removing one species wouldn’t stop tooth decay.
Gum-Disease-Linked Species
Researchers grouped the three red complex species in 1998 because they were frequently found together and were strongly associated with periodontitis. A 2019 review of the red complex reports that they rarely show up unless orange complex species such as F. nucleatum have settled in first.
P. gingivalis shows why “good” and “bad” labels are too simple. A review in the Journal of Immunology Research describes it as a natural member of the oral microbiome that can become highly destructive in diseased gums.
Evidence Tier: Strong for the association between these species and periodontitis. That is different from saying three bacteria cause gum disease by themselves. A 2021 review in Frontiers in Microbiology points out that newer sequencing methods have turned attention to many species beyond the red complex.
When Yeast Overgrows
Bacteria aren’t the only residents that can cause trouble. Mayo Clinic notes that it’s natural for candida yeast to live in the mouth. When it builds up, the result is oral thrush, which the CDC describes as white patches on the inner cheeks, tongue, roof of the mouth, and throat.
Yeast can also team up with bacteria. NIH-funded researchers found fungus in the plaque of children with severe tooth decay, where it partners with acid-making bacteria and makes the decay worse.
What Happens When the Oral Microbiome Is Out of Balance?
When the oral microbiome is out of balance, harmful species outgrow the helpful ones, and the usual results are tooth decay, gum disease, and persistent bad breath (halitosis). The damage builds slowly, and the early stages are often painless.
What Dysbiosis Means
Scientists call this imbalance oral dysbiosis, or simply dysbiosis. Dr. Modupe Coker of Penn Dental Medicine explains that in a healthy mouth, helpful and harmful microbes coexist, and that in dysbiosis the harmful bacteria flourish.
On your teeth, the trigger is usually sugar. Sugary foods and drinks feed acid-making microbes, and the NIH warns that the more sugar you eat, the more fuel they have to build plaque and damage teeth.
On your gums, the CDC describes a step-by-step slide:
Plaque Builds Up
If it stays on a tooth, the gum around it becomes inflamed. This is gingivitis, and it’s reversible.
Plaque Hardens Into Tartar
Brushing can’t remove tartar. A dental professional has to.
Bacteria Spread Below the Gum Line
They form a deepening pocket between tooth and gum and release toxins that worsen the inflammation.
Bone Is Lost
This is periodontitis. It can’t be reversed, though professional treatment can slow it down.
U.S. adults age 30 or older had some level of periodontitis in 2009–2014 (CDC)
This is common. About 4 in 10 U.S. adults age 30 or older had some level of periodontitis in 2009–2014, according to the CDC, and the figure rises to about 60% for adults 65 or older. Periodontitis and cavities are the two leading causes of tooth loss.
Evidence Tier: Strong These figures come from the National Health and Nutrition Examination Survey, a large national study cited by the CDC.
Frequent sugar and plaque left in place tip the mouth from a balanced community toward dysbiosis.
Signs Your Balance May Be Off
No symptom measures your microbiome directly. What you can notice are the conditions an imbalance leads to. Healthline’s guide lists these common signs:
Common Signs of an Imbalance
- Bad breath that doesn’t go away
- Bleeding or swollen gums
- Tooth sensitivity
- More plaque buildup than usual
- Frequent cavities
A mouth without symptoms isn’t proof of balance. The CDC cautions that gum disease can become serious before a person notices anything, which is why it recommends a dental checkup at least once a year.
See a dentist promptly if you notice:
- Gums that are red, swollen, or tender, or that bleed
- Gums that have pulled away from your teeth
- Loose teeth, or pain when you chew
- A change in how your teeth fit together when you bite
- White patches inside your mouth
The first four are gum disease signs listed by the CDC. Mayo Clinic advises seeing a medical or dental professional for white patches. Home care can’t remove tartar or reverse bone loss.
How Does the Oral Microbiome Affect the Rest of Your Body?
The oral microbiome is linked to several conditions beyond the mouth, most consistently heart disease and diabetes, and mainly through gum disease. Most of these links are associations, though. Researchers haven’t shown that mouth bacteria cause these diseases.
The National Institute on Aging explains the suspected route: bacteria and the inflammatory molecules they make can travel from mouth infections through the bloodstream.
| Condition | What the research shows | Evidence Tier |
|---|---|---|
| Heart and blood vessel disease | Gum disease is associated with it, independent of shared risk factors. No proof of cause. | Strong (for the association) |
| Diabetes | The link runs both ways: diabetes raises gum disease risk, and untreated periodontitis can make diabetes worse. | Strong |
| Blood pressure | Oral bacteria convert dietary nitrate into compounds that help regulate blood pressure. | Moderate |
| Gut inflammation | Oral bacteria can reach the gut. Whether they settle there and drive disease is unclear. | Preliminary |
| Alzheimer’s disease and dementia | Older adults with signs of gum disease were more likely to develop Alzheimer’s in one large analysis. | Preliminary |
Heart and Blood Vessels
The American Heart Association reviewed decades of studies in 2012 and concluded that gum disease is associated with atherosclerotic vascular disease independent of known confounders. It did not find evidence that gum disease causes it. The two conditions share powerful risk factors, including tobacco use, diabetes, and age.
Diabetes
This link is well supported, and it runs in both directions. The CDC lists diabetes as a risk factor for gum disease and reports that about 60% of U.S. adults with diabetes had periodontitis in 2009–2014. It also states that untreated periodontitis can make diabetes worse.
Blood Pressure
Nitrate-reducing oral bacteria turn nitrate from food into nitrite, which the body can convert to nitric oxide, a molecule that relaxes blood vessels and helps regulate blood pressure. A 2026 review reports that in experimental studies, suppressing these bacteria blunted the blood pressure response to dietary nitrate.
The Gut
Your mouth is the start of your digestive tract, and you swallow oral microbes with your saliva all day. A 2022 mini-review of the oral-gut axis reports that oral dysbiosis caused by gum inflammation is associated with inflammatory bowel disease.
A 2026 review in Microorganisms adds a caution: oral bacteria clearly reach the gut, but it’s not yet known whether they settle there permanently.
The Brain
The NIA cautions that population studies show association, not causality, and that dementia itself makes brushing and flossing harder.
That last point applies across this whole section. Healthline’s dentist-reviewed guide notes that it’s still unclear whether changes in oral microbes lead to disease or disease changes the microbes. Caring for your gums protects your teeth, and that much is proven. Don’t count on it to prevent heart disease or dementia.
What Shapes Your Oral Microbiome?
Your oral microbiome is shaped first by how it was seeded in early childhood, and after that by what you eat, how much saliva you make, and habits such as smoking. Some of these you can’t change. Several you can.
Where It Comes From
You weren’t born with the community you have now. A review in Nature Reviews Microbiology explains that the oral microbiome is acquired from both the mother and the environment, in an organized pattern. Each new tooth adds a fresh surface to colonize, and diversity rises as teeth come in.
Once established, the community is resilient. A review in Frontiers in Cellular and Infection Microbiology notes that oral microbes survive daily disturbances from eating and cleaning, which results in a microbiome that stays stable over the long term. One sugary dessert won’t undo it. Habits repeated for months and years are what shift the balance.
Diet and Sugar
Sugar feeds the acid-making microbes and helps them increase in number and spread, according to the NIH. How often you eat matters too: Healthline’s guide lists frequent snacking and highly processed foods among the things that may disrupt the balance.
Fiber pulls the other way. Penn Dental Family Practice points out that fibrous vegetables, fruits, and whole grains supply prebiotics that feed beneficial bacteria.
Saliva and Dry Mouth
Saliva is your mouth’s built-in maintenance system. The National Institute of Dental and Craniofacial Research (NIDCR) explains that it washes food particles from your teeth and gums and carries calcium and phosphate that help keep teeth strong. It also helps keep harmful germs in check.
When saliva runs low, that protection drops. NIDCR states that dry mouth raises the risk of tooth decay and fungal infections. Hundreds of medicines can cause it, including common drugs for high blood pressure, depression, and bladder control.
Dry mouth is not a normal part of aging, so if yours persists, ask your dentist or doctor why.
Tobacco, Alcohol, Medications, and Health Conditions
Factors That Can Shift the Balance
- Tobacco. About 62% of U.S. adults age 30 or older who currently smoke had periodontitis in 2009–2014, according to the CDC. (Evidence Tier: Strong, from national survey data.)
- Alcohol. NIDCR notes that both tobacco and alcohol dry out the mouth. A researcher at MD Anderson Cancer Center adds that alcohol can affect the balance of the oral microbiome.
- Antibiotics and stress. Healthline lists antibiotic use and chronic stress among the factors that may alter oral microbes.
- Health conditions. Dr. Modupe Coker of Penn Dental Medicine explains that when the immune system is weakened by conditions such as HIV, diabetes, or cancer treatment, the balance between helpful and harmful bacteria tips.
- Hormonal changes. The CDC includes pregnancy and menopause among the factors associated with gum disease.
If any of these apply to you, tell your dentist. It may change how often you need checkups and cleanings.
How Can You Support a Healthy Oral Microbiome?
You support a healthy oral microbiome by removing plaque every day, cutting back on sugar, keeping your mouth moist, and seeing a dentist regularly. The goal is to keep plaque thin and the helpful species fed.
Daily Habits That Help
These steps come from the NIH, the CDC, and the National Institute of Dental and Craniofacial Research:
Brush twice a day with fluoride toothpaste. Brushing breaks up plaque before it thickens and hardens.
Brush your tongue. The NIH includes this in its tips for keeping mouth microbes in check.
Limit sugary foods and drinks. Less sugar means less fuel for acid-making microbes. Fibrous vegetables, fruits, and whole grains feed the helpful ones.
Drink water, fluoridated if you can. Water supports saliva flow. Chewing sugarless gum also stimulates saliva, and NIDCR notes that gum with xylitol may help prevent cavities.
Avoid tobacco and go easy on alcohol. Both dry out the mouth, and smoking is strongly tied to gum disease.
See a dentist at least once a year. A professional cleaning removes tartar, and a checkup catches gum disease before you can feel it. Go more often if your dentist recommends it.
Is Mouthwash Helping or Hurting?
For most people, occasional mouthwash use is unlikely to harm the oral microbiome, but the research on long-term antiseptic use is less settled. Two expert sources frame the debate.
The reassuring view comes from Dr. Hsun-Liang (Albert) Chan, chair of periodontology at The Ohio State University College of Dentistry. He says the chance of upsetting your mouth’s bacterial balance is very low, especially with temporary use, and that mouthwash can lower the chance of gingivitis.
Evidence Tier: Preliminary The dysbiosis concern rests on recent sequencing studies, and the reviewers themselves call the picture incomplete. It does fit with the blood pressure research covered earlier, where suppressing nitrate-reducing bacteria blunted a helpful response.
In practice:
- Treat mouthwash as an add-on. Dr. Modupe Coker of Penn Dental Medicine calls it an adjunct, not a substitute for brushing or flossing.
- Match the rinse to a purpose. Dr. Chan suggests a fluoride rinse for cavity prevention or a gum-focused rinse for early gum problems, chosen with your dentist.
- Follow your dentist’s instructions on prescription rinses. If a rinse has been prescribed for gum treatment, use it as directed and for as long as directed.
All of these habits prevent problems. They don’t treat established gum disease. According to Dr. Chan, once gum disease has progressed or plaque has hardened, mouthwash won’t help. If you have any of the warning signs listed above, book a dental visit.
Do Oral Probiotics, Prebiotic Toothpastes, and Home Tests Work?
Some of these products have modest research behind them, and none replaces brushing, flossing, and dental visits. Fluoride toothpaste has the strongest evidence. Oral probiotics show some benefit alongside professional gum treatment. Prebiotic toothpastes and home microbiome tests are still unproven.
| Product type | What the research supports | Evidence Tier | Our take |
|---|---|---|---|
| Fluoride toothpaste | Well-documented protection against cavities | Strong | Research-based pick for everyone |
| Oral probiotic lozenges | May add a modest benefit alongside professional gum treatment | Moderate | Research-based pick for people in gum treatment, with a dentist’s approval |
| Arginine (“prebiotic”) toothpaste | Promising results, but the studies carry a high risk of bias | Preliminary | Optional. Choose one that also contains fluoride. |
| Probiotic mouthwash | No strong evidence that it beats standard mouthwash | Preliminary | No reason to pay extra yet |
| Home saliva microbiome test | A one-time saliva sample can’t replace sampling under the gums | Preliminary | Not a substitute for a dental exam |
Oral Probiotics
The National Center for Complementary and Integrative Health (NCCIH) summarizes a 2016 review of 12 studies that found probiotics could be a helpful addition to gum disease treatment, with effects that differ by probiotic.
For cavities, the evidence is thinner. NCCIH reports that the research is small, limited to young children, and too low in quality for firm conclusions.
If you want to try an oral probiotic, check the label for the exact strain name, and prefer products with third-party testing. NCCIH warns that some probiotic products have contained microorganisms other than those listed.
Prebiotic and Fluoride Toothpaste
Arginine toothpaste is sold on the acid-neutralizing mechanism described earlier. A systematic review in Caries Research found insufficient evidence that adding arginine prevents cavities. The Swedish health technology agency SBU, which produced that assessment, notes that arginine toothpaste costs about 40% more than basic fluoride toothpaste and describes fluoride toothpaste’s effect as well documented.
A 2020 scoping review found better results for arginine but rated the evidence as having a high risk of bias.
At-Home Oral Microbiome Tests
A saliva test can list some of the bacteria in your mouth. It can’t diagnose gum disease. A systematic review in Frontiers in Cellular and Infection Microbiology concluded that one-time saliva sampling cannot replace sampling plaque from under the gums when measuring gum-disease bacteria. A dental exam remains the reliable check.
Who Should Be Cautious
- People with weakened immune systems or serious illness. NCCIH states that the risk of harmful effects from probiotics is greater in these groups. Talk to your healthcare provider first.
- Anyone with gum disease symptoms. NCCIH’s advice applies here: don’t use probiotics as a reason to postpone seeing a professional.
- Anyone expecting drug-level proof. Probiotic supplements don’t require FDA approval before they’re sold.
The Bottom Line
Key Takeaways
- The oral microbiome is the community of about 700 species of microbes living in your mouth, and many of them help protect your teeth and gums.
- Helpful bacteria such as Streptococcus sanguinis and Rothia hold harmful species back and lower plaque acidity, and some of them process nitrate from vegetables.
- Frequent sugar and plaque left in place tip the balance toward cavities and gum disease, which affects about 4 in 10 U.S. adults age 30 or older.
- Gum disease is associated with heart disease, diabetes, and dementia. Only the diabetes link is well established in both directions, and none is proven to be caused by mouth bacteria.
- Killing every microbe isn’t the goal. Thin plaque, less sugar, enough saliva, and regular dental care keep the community in balance.
Our recommendation is simple and inexpensive: brush twice a day with a fluoride toothpaste, clean between your teeth daily, and see a dentist at least once a year.
Among the products covered here, fluoride toothpaste is the only one with strong evidence, and it’s a research-based pick, not one we tested ourselves. Oral probiotics are a reasonable add-on only if you’re already in gum treatment and your dentist agrees.
Talk to your dentist or doctor before starting a probiotic supplement or changing how you care for your mouth, especially if you have diabetes, a weakened immune system, dry mouth from medication, or any of the warning signs listed in this article.
This article draws on published studies and guidance from U.S. health agencies, all linked above and listed below. It has not been reviewed by a dentist or physician. See our Editorial Policy.
Frequently Asked Questions
What Is the Oral Microbiome in Simple Terms?
How Do I Know If My Oral Microbiome Is Unbalanced?
How Can I Restore My Oral Microbiome Naturally?
Does Mouthwash Kill the Good Bacteria in Your Mouth?
Do Oral Probiotics Really Work?
Can You Test Your Oral Microbiome at Home?
Is the Oral Microbiome Connected to Gut Health?
References
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American Heart Association.
Periodontal Disease and Atherosclerotic Cardiovascular Disease
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Centers for Disease Control and Prevention.
About Periodontal (Gum) Disease
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Ram J, Awan KH, Freitas CMT, et al.
Clinical Effects of Lactobacillus reuteri Probiotic in Chronic Periodontitis: A Systematic Review
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Baker JL, Mark Welch JL, Kauffman KM, McLean JS, He X.
The Oral Microbiome: Diversity, Biogeography and Human Health
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Rosier BT, Takahashi N, Zaura E, et al.
The Importance of Nitrate Reduction for Oral Health
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NIH News in Health.
Mouth Microbes: The Helpful and the Harmful
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Huang X, Browngardt CM, Jiang M, Ahn S-J, Burne RA, Nascimento MM.
Diversity in Antagonistic Interactions Between Commensal Oral Streptococci and Streptococcus mutans
Shamim Sarker is the Founder and Lead Health Reviewer at ShamimGuide.com — an independent platform dedicated to evidence-based supplement and health product reviews. With over 8 years of personal research experience in natural health and wellness, he brings a rigorous, science-first approach to every review published on this site.
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