Is bentonite abrasive?
Bentonite clay continues to make waves in the natural oral care world, and for good reason. Renowned for its detoxifying properties and mineral-rich composition, this natural wonder is not only effective but also incredibly gentle on your teeth. But what does science say about its cleaning efficiency and abrasiveness? Let's dive into the research to see why bentonite is becoming a favorite for those seeking a cleaner, healthier smile.
The Science Behind Bentonite's Cleaning Efficiency
One of the standout features of bentonite clay is its impressive cleaning efficiency. Studies have shown that bentonite scores remarkably high when it comes to removing plaque and surface stains. This is largely due to its unique ability to absorb impurities and toxins, making it highly effective in drawing out and capturing the debris that can accumulate on our teeth.
In the world of oral care, the Pellicle Cleaning Ratio (PCR) is a key measure used to determine how effectively a toothpaste can remove stains and plaque from teeth. Generally, the higher the PCR, the more abrasive the toothpaste tends to be, as it needs to scrub away debris. However, bentonite clay is unique. Despite its high PCR, indicating excellent cleaning ability, it has a low Relative Dentin Abrasivity (RDA) score, meaning it cleans thoroughly without being harsh on enamel. This combination gives bentonite a high Cleaning Efficiency Index (CEI), setting it apart from many conventional toothpastes.
Gentle Yet Effective: Low Abrasiveness Confirmed
While bentonite clay’s cleaning power is impressive, what about its impact on enamel? It’s natural to wonder if something so effective might be too harsh, but here’s where bentonite truly shines. Research shows that bentonite has a low abrasiveness score, making it safe for daily use without wearing down enamel.
One of the ways scientists measure abrasiveness is by using the Mohs hardness scale, which ranks materials based on their ability to scratch one another. Bentonite clay scores between 1.5 and 2 on the Mohs hardness scale, which is even lower than a human fingernail (which ranks around 2.5). This means that while it’s tough on plaque and stains, it’s incredibly gentle on the delicate enamel that protects our teeth.

Studies Confirm Bentonite's Superior Performance
Further supporting its use in oral care, studies like the one by Putt et al. (2011) have demonstrated that bentonite clay toothpaste can deliver superior results compared to many conventional toothpastes. It effectively cleans without causing damage, thanks to its lower Relative Dentin Abrasivity (RDA) score. This low abrasiveness is a major factor in why bentonite is favored by those looking to maintain their enamel while achieving a deep clean.
What’s more, bentonite doesn’t just clean—it also promotes overall oral health. Its mineral content helps to neutralize bacteria and reduce inflammation, making it a holistic solution for a healthy mouth.
Why Choose Bentonite for Your Oral Care Routine?
If you're looking for an oral care product that offers both high efficiency and gentle care, bentonite clay is a top contender. Here's why it stands out:
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High Cleaning Efficiency: Bentonite’s ability to absorb and remove impurities gives it a significant edge in cleaning power, making it a powerful tool in keeping your teeth plaque-free and bright.
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Low Abrasiveness: Despite its effective cleaning action, bentonite is incredibly gentle on enamel. Its low score on the Mohs hardness scale and low RDA rating ensure that you can use it daily without fear of eroding your teeth.
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Natural and Safe: Bentonite is a natural, chemical-free option that aligns with a holistic approach to oral care. It's free from the harsh additives often found in conventional toothpaste, making it a safer choice for you and your family.
Conclusion: Bentonite Clay—The Perfect Balance of Power and Gentleness
The research is clear: bentonite clay offers a unique combination of superior cleaning power with minimal abrasiveness. This makes it an ideal choice for those looking to maintain a healthy, bright smile without compromising their enamel.
By incorporating bentonite into your oral care routine, you’re not just choosing a product that cleans effectively; you’re also making a choice that supports long-term oral health. With its gentle yet effective action, bentonite clay is the perfect balance of power and care, helping you achieve a naturally clean and healthy smile every day.
Resources:
Putt, M. S., Milleman, J. L., & Ghassemi, A. (2011). Abrasion, polishing, and stain removal characteristics of various dentifrices in vitro. The Journal of Clinical Dentistry, 22(1), 11-18.
Zoller, M. J., Hamza, B., Cucuzza, C., Gubler, A., Attin, T., & Wegehaupt, F. J. (2023). Relative dentin and enamel abrasivity of charcoal toothpastes. International Journal of Dental Hygiene, 21(1), 149-156. doi: 10.1111/idh.12634
Ward, T. M. (2015). The Mohs Scale of Hardness. Mineralogical Society of America. Retrieved from Mineralogical Society Website
Hurlbut, C. S., & Klein, C. (1985). Manual of Mineralogy (20th ed.). New York: Wiley.
Let customers speak for us
from 2130 reviewsI like this toothpaste but it is quite strong
I am loving this easy to use tastes great. It doesn’t froth in the mouth or need to rinse it just leaves a wonderful clean fresh feeling. The floss is easy to use and doesn’t get caught up or wedged like others. The mouth wash has a real zing to it you can feel it working and refreshing your mouth between brushing.
I have been using the mask for over a week now and I can definitely feel the sensitivity on my teeth has reduced. I need to see how it is in a few months but so far I am pleased.
A tooth paste that does exactly what it claims, my teeth feel so much healthier.
Brought for my son his never going back to a normal toothpaste again he likes the fresh minty taste
I really love the toothpaste. Very happy with it thank you.
It’s comforting knowing when my son inevitably swallows most of the toothpaste in his mouth, it’s natural and doesn’t contain nasty chemicals. He also enjoys the taste and the last natural toothpaste we had he would clamp his mouth shut, so we are very pleased with this product
Pleasantly surprised by this toothpaste, ive had some really bad tasting flouride free toothpastes so I had very low expectations. But ive enjoyed this one thoroughly, we also got the kids mild mint for my son and he can’t get enough. Really pleased we’ve found truth paste, love that it’s not in plastic too!
It has the tart, aromatic taste of normal toothpaste that promises to therefore be good for your teeth. Not being able to guarantee I will always clean twice a day, I find that my teeth have become stronger in their roots, they may have even self repaired in places and they're cleaner than they've ever been.
If more than one household member is using it, there needs to be a little spoon to neatly take some each time ("toothbrush marks" in the paste can be a little off-putting) It would be nice if the jar came with something small and biodegradable like that
These interdental brushes are very well designed for the job they have to do.
Also good to feel one is not adding to all the plastic that is out there.
Thank you.
My teeth and gums still feel great
I was recommended this toothpaste to try as more natural alternative to the commercial brands after complaining about reactions from the chemical formula used in these brands. Although I have only used them for a couple of weeks I am more than satisfied with the results, there has been no painful reaction from the product, my gums feel firmer and I believe it may also help with my sensitive digestive system. I will continue using this product and observe if it continues to work.
I love the way a small amount of this goes a long way. I also love the way it forms a true paste that feels like it is cleaning and coating and feeding my teeth & gums.
I have only been using the tooth powder for a few weeks and I can't really see a noticeable difference but I love the way the product feels and my teeth do "feel" better.
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