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Essential oils – Are essential oils safe to use in the mouth?


Recently, there’s been a lot of online discussion about whether or not essential oils are safe to be used in the mouth.

And for good reason.

If the oral microbiome gets imbalanced, the health of the whole body can be compromised.

The primary concern seems to center around whether or not using essential oils in the mouth can injury the oral microbiome, and some broad statements that have been stimulated might run the risk of misleading people who could actually benefit from essential oil-based product solutions.

And while we’ve addressed questions like this in the FAQs “Are essential oils bad for the oral microbiome ?” and “Does the HealThy Mouth Blend damage the’ good glitches’ in my mouth ?”, we thought it may help you if we circled on this specific question again.

Our posture …

Ok, so here’s an overview of our stance: we believe that properly diluted essential oil-based products( like our HealThy Mouth Blend) do not damage and actually help balance the oral microbiome. And, as you’ll see, we base our posture on scientific literature rather than what’s trending.

Of course, we’re biased. We provide products that contain certified organic essential oils. But beyond our bias lies plenty of research explaining and validating why we’ve included essential oils in our products.

So, in an attempt to raise the bar of understanding on this subject, let’s take a deep dive into what the literature truly says regarding the safety of essential oils in the mouth, and specifically whether essential oil-based oral health products harm the’ good bugs’ in our mouth.

From there, rather than adopt our( or any other expert’s) opinions as your own, you’ll be empowered to decide for yourself whether or not essential oil-based oral health products are a good fit for your family.

Full transparency

As you know, we aren’t dentists or medical professionals.

However, we do have a passion for researching both recently published and’ more seasoned’ dental literature, and we’ve been doing so for nearly 30 years. Susan and I have a background in the Chinese longevity arts and we’ve always shared a love of both learning and holistic live. If you’d like to check out how we began our journey into researching oral health, feel free to check out Susan’s story.

In addition to’ geeking out’ on research, we love an exchange of information with you.

Clinical practice in medication( and dentistry) tends to be at least 10 years behind the research. So, our hope is that by continuing to dig through the scientific literature and by sharing the information we find with you, we can help you stay on the leading edge on your journey toward optimal oral health.

Our simple research strategy

One of our main research strategies when excavating into any subject is to find who is providing the most consistent, evidence-based research and learn lessons from them.

Specific to the discussion of the field of the oral microbiome, we find one person to have a highly researched and unbiased view. So, our posture and much of this article will draw from the work of Dr. Phillip D Marsh, professor of oral microbiology at the University of Leeds in the UK and author of the book, Oral Microbiology.( While an excellent read for geeks like us, be forewarned, it’s a post alumnu textbook.)

Understanding symbiosis and dysbiosis

Let’s start by laying down some foundations.

In the spirit of clarity, we use the terms’ oral flora’ and’ oral microbiome’ interchangeably. And we call the’ residents’ in the oral microbiome community’ microbes” probiotic’ species or’ thug bugs’.

Evidence continues to mount that suggests that there’s a symbiotic relationship between us( the host) and the resident microbes in the mouth. In a healthy state of symbiotic balance, we support the microbes and the microbes supporting us.

However, at times, this health-giving relationship between the host( us) and our oral vegetation are able to disrupted and imbalanced. This nation of imbalance is called dysbiosis.

Rather than the win/ win,’ you help me/ I help you’ scenario that occurs in healthy symbiotic surroundings, in an imbalanced mouth, certain species of microbes start to overrun the mouth and actively seek to undermine our health, creating a’ win’ for the microbes and a’ lose’ for our health.

These microbes are classified as’ pathogenic’, entailing they can cause disease.

Thug bugs …

At OraWellness, we tend to refer to pathogenic microbes as ’thug bugs’ because while they’re not truly’ bad’, illnes nearly always follows when thug glitches increase their populations.

And unfortunately, research has shown that various species of thug glitches actively seek to team up with other species of thug glitches. Think of it as a kind of’ microbial Mafia’ where the kingpin glitches recruit others to help them do their dirty work.

( As an interesting side note, if you’re curious to understand another way how our HealThy Mouth Blend assists, read about how our mix disrupts the communications between different thug glitches working together, called’ quorum sensing’ in this article,” What’s in the HealThy Mouth Blend and why is it so efficient ? “)

So the path to greater oral health as we see it is to 😛 TAGEND

optimize the environmental issues that fosters the health-supporting species of oral microbes and prevent the thug glitches from gaining the upper hand.

Science refers to this path as the’ ecological plaque hypothesis’.

Understanding the ecological plaque hypothesis

The litmus test we use to determine if an expert genuinely knows what they are talking about is whether they ever admit that there are things they don’t know.

Notice that the term we’re going to discuss is the’ ecological plaque hypothesis’.

In other words, our group understanding of how to navigate the path to optimal oral health is a hypothesis, a run model.

We( all) don’t know everything there is to know on the subject.

We use the information at hand to build a model that provides us with consistent outcomes. Meanwhile, we continue to seek more information to improve that model, even if we may wind up challenging or disproving original aspects of it. This is the cycle of continual improvement, which ultimately leads us to better and better models.

The’ local/ global’ precept …

Ok, so getting to the hypothesis: if you’ve been following our blog entries and videos, you probably already understand the ecological plaque hypothesis. So far, our best article on this has been’ How to balance your oral flora‘.

It’s what we talk about all the time: basically, to optimize oral health, we must support both the’ local’, or’ in the mouth’, surrounding AND we must also provide’ global’, or’ whole body’, immune supporting. And merely to make sure we’re all on the same page here, the global subsistence is primary in the long term.

We discuss this’ local/ global’ precept more deep in the article,” 4 Steps to Help Your Kids Live a Cavity Free Life

However, local subsistence is important, too. According to Dr. Marsh, the ecological plaque hypothesis states, “… a substantial change in local environmental conditions can alter the competitiveness of plaque bacteria leading to the enrichment of organisms most suited to the new environment.”

In other terms, we must support a shift in the terrain to build long-term changes to our oral health.

Regarding tooth decay, helpful steps like reducing sugar and avoiding acidic foods and drinkings come from the ecological plaque hypothesis. And for those of you who are more concerned about gum disease, strategies like habitually disrupting the thug glitches in gum pockets and increasing oxygen in gum pockets are born from this same hypothesis.

It’s all about keeping plaque thin

Like we’ve shared in other articles and video tutorials, a major part of optimizing our oral health is being a’ good conductor’ of the symphony of microbes in the mouth.

One major strategy of being a good conductor is to keep plaque biofilms thin.

Not surprising, this strategy is a big part of the ecological plaque hypothesis because as plaque thickens, the environmental issues in the plaque changes( it becomes less oxygen-rich ), and thug bugs proliferate more easily in that low-oxygen environment.

Depending on their ingredients, some essential oil-based oral health products( like our HealThy Mouth Blend) can help prevent this from occurring.

For example, manuka petroleum is particularly effective at helping to achieve adhesion inhibition. In other words, manuka oil constructs it more difficult for thug bugs and the plaque that they make to stick to the teeth and gums, which assistances prevent plaque biofilms from thickening.

And, as we state in,” Can some plaques actually help our teeth stay healthy ?“, essential petroleums can play an important role in penetrate even thick biofilms to help establish thinner( aka healthier) plaque on our teeth. Adhesion inhibition is part of mechanical plaque control, which means it plays a big part in being a good conductor of the symphony in your mouth.

What role do essential oils play in the ecological plaque hypothesis?

A big part of Dr. Marsh’s hypothesis is called,’ control without killing’.

This concept of’ control without killing’ is critically important to understand.

What we’re looking to do is use plant botanicals and evidence-based hygiene techniques( like Bass brushing and conscious flossing) to prevent plaque from thickening and provide an environment in which we discourage the thug glitches without disturbing the probiotic communities.

But since some essential oils have antimicrobial properties, wouldn’t the products that contain them make huge imbalances in our oral microbiome?

Not necessarily.

In fact, quite the opposite according to research.

“Long-term use of an EO[ essential oil] mouthwash is microbiologically safe, with no changes observed in the bacterial composition of supragingival plaque, and no evidence of antimicrobial resistance.” Dr PD Marsh, writer of Oral Microbiology

One study found that, “Long-term use of an EO[ essential oil] mouthwash is microbiologically safe, with no changes observed in the bacterial composition of supragingival plaque, and no evidence of antimicrobial resistance.”

Another study found that,” Successful antimicrobial agents are able to meet the apparently contradictory requirements of maintaining the oral biofilm at levels compatible with oral health but without disrupting the natural and beneficial properties of the resident oral microflora .”

And what about Dr. Marsh?

He found that,” Antimicrobial agents in oral care products may have a more selective mode of action in which they mainly inhibit the growth and metabolism of organisms implicated in disease while leaving those associated with oral health relatively unaffected .”[ Marsh, 2012]

Control without killing continued …

How is it possible to interrupt disease-causing microbes while leaving the health-supporting ones intact?

In Marsh’s own words,

” A delicate balance is needed, however, to control the oral microbiota at levels compatible with health, without killing beneficial bacteria and losing the key benefits delivered by these resident microbes. These antimicrobial agents may achieve this by virtue of their recommended twice daily topical employ, which results in pharmacokinetic profiles indicating that they are retained in the mouth for relatively long periods at sub-lethal levels. At these concentrations they are still able to inhibit bacterial traits implicated in disease( e.g. sugar transport/ acid production; protease activity) and retard growth without eliminating beneficial species .”

This is why it’s so important to have the right balance and dilution of plant botanicals.

We explore this as well as the specifics on why our HealThy Mouth Blend is so effective in this article. If the formula is too concentrated, it can damage the microbial balance in the mouth. If it’s not strong enough, we won’t benefit from the supportive qualities these plant botanicals offer us.

The balance needs to be just right, and when it is, it can help us to be a good conductor by encouraging the beneficial microbes and subverting the efforts of the thug bugs that are trying to build their populations.

Supportive strategies …

Another component of using products like our HealThy Mouth Blend is being able to place the supportive compounds where they are needed most.

Using the Bass Brushing Technique with the HealThy Mouth Blend helps us to do only that.

The rounded bristle tips-off of the Bass toothbrush along with the unique brushing technique help the organic essential petroleums to get into the gum pockets, which is where the thug bugs associated with gum disease thrive. The same runs for other strategies like conscious flossing.

These kinds of strategies are why we get so many testimonials from happy customers. And we especially love the ‘after the dentist’ testimonies, because professional feedback can really help confirm that we’re on the right track with our efforts.

Final believes

Let’s close with one more quote from Dr. Marsh regarding utilizing essential petroleums for oral health 😛 TAGEND

” Although these agents are often described as having a broad spectrum of antimicrobial activity, it has been argued that, under the conditions of use in the mouth, they may also function effectively at sub-lethal concentrations by interfering with bacterial traits associated with disease. This type of’ controlled’ antimicrobial approach would maintain the beneficial activities that the host derives from the presence and metabolism of the resident oral microbiome, while reducing the activity of the microbial factors( e.g. acid production; proteolysis) that drive the changes in the balance in the biofilm that lead to dysbiosis( control without killing ).”

We hope you’ve gleaned some helpful info from our research-based contribution to the discussion about using essential oil-based products in the mouth.

We encourage each of us to continue to question the narratives that we’re told and challenge our existing models so we can maintain growing and improving along our path.

What about you-what has been your experience use products like our HealThy Mouth Blend? Have you saw be entitled? Have you observed it to be a positive or negative experience?

Please share in the comments below so we can all continue to learn from our group experience.

Helpful, Related Resources:


” Are essential petroleums bad for the oral microbiome ?”[ FAQ] ” Does the HealThy Mouth Blend damage the’ good glitches’ in my mouth ?”[ FAQ] What’s in the HealThy Mouth Blend and why is it so efficient ?[ article] How to balance your oral vegetation[ article] 4 steps to help your children live a cavity-free life[ article] OraWellness HealThy Mouth Blend [[ product answer ]] Can some plaques actually help our teeth bide healthy ?[ article]

Video tutorials

How to brush your teeth to stop tooth decay[ video tutorial] How to brush your teeth to reduce gum disease[ video tutorial] How to floss and NOT damage your gums[ video tutorial]


Oral Microbiology, Marsh, PD[ amazon link] Evidence-based control of plaque and gingivitis– Pubmed Ecological Approaches to Oral Biofilms- Control without Killing 2015, Marsh, PD Penetrating the plaque biofilm- essential petroleums[ Journal of Clinical Periodontology 2003]

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