How To Use Eggshells to Remineralize Your Teeth

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How To Use Eggshells to Heal Your Cavities

We all know that visiting our dentist at least once a year is important to our oral health, but have you ever thought of brushing your teeth with eggshells?…Probably not, and I wouldn’t blame you. The thought of it is kinda weird, and why would we want to use eggshells when there are plenty of commercial toothpastes available that claim to transform our teeth into perfect pearly whites?

Well, eggshells contain the perfect amount of the ideal substances for healing cavities (which regular toothpastes do not), and huge amounts of calcium and 27 other minerals. Pretty impressive huh? To think we throw out eggshells, thinking they are useless!


Furthermore, I’m talking about it based on the personal experience of my natural health enthusiast friend Anette. Anette has sensitive teeth and went through a phase of getting a lot of cavities.

She tried natural fluoride free toothpaste and commercial brands for sensitive teeth, and even plain baking soda.

However, none of that stuff was helping to stop her getting cavities. So then she began researching more information about tooth remineralization and found that through this process, she can reverse tooth damage (also called decalcification or demineralization).

She found out that there is even a special diet for that. But with a family of fussy eaters, and a lack of time and money, she felt like that kind of diet wasn’t going to work for her. So, thank goodness she stumbled upon a recipe to make a remineralizing toothpaste at home, using eggshells!

She has been using her homemade eggshell toothpaste for nearly a year, and she has no more cavities developed since! She says her teeth also feel a lot cleaner, with much less plaque build up, and even her dentists was impressed.

They are also whiter. Her friends have all noticed and have been asking what toothpaste she used. You can imagine their shock when she said, eggshells! Her gums and mouth, in general, also feels a lot healthier. All in all she feels much happier and more confident, and finds herself smiling and laughing more.

The science behind the eggshells toothpaste

Hungarian physician, Krompeher, along with a group of medics and biologists, first began studying the healthy properties of eggshells. Over 10 years of research have shown that eggshells are the perfect source of bio-available calcium (dense and easily absorbed).


This whole revelation about eggshells is actually backed up by a dentistry school in the Philippines, where a study took place, comparing various commercial toothpaste brands along with their own compounded toothpaste from eggshells.

They discovered that over time, the teeth cleaned with the eggshell toothpaste had less plaque build up and stronger enamel. This is due to the fact that eggshells have calcium and other trace minerals which are essential for healthy enamel, thus preventing cavities.

Amazing eggshells are not just great for our teeth either, studies also showed accelerated healing when eggshells were used for treating such orthopedic diseases as congenital dislocation of a hip or osteoporosis.

Eggshells are especially beneficial for small children with the formation of their bone tissue, which requires calcium. Some people even add shells to baby food which can help prevent rickets and anemia, which normally occurs along with rickets.

A recent research from 2015 published in the Journal of Clinical & Diagnostic Research found that brushing your teeth with eggshell powder can help to reduce the number of cavities and white spots on teeth. For examples, the researchers found that the high pH content of eggshell powder helped to lower acidic content in the mouth. Also, the levels of calcium help to restore essential minerals to the teeth.


How to consume eggshells

To get optimum nutrition from eggshells, it is best to use organic, free range eggs. Simply boil eggs until hard and peel the shells off (the boiling will kill any pathogens). Allow the shells to dry naturally. You can grind them down into a fine powder and add them to your food or add them into your daily smoothies.

Homemade Eggshell Toothpaste

The advantage of this toothpaste is that it contains natural ingredients, it’s cheap and effective. It also allows you to avoid commercial toothpastes that may cause cancer or embed plastic in your gums. You may have heard that baking soda is abrasive, and therefore eggshells may be the same.


However, compared to commercial toothpastes, baking soda and eggshells are much less abrasive, and therefore healthier for your teeth. You can also use baking soda as a powerful kitchen medicine  and a combination of baking soda with lemon is being researched to treat cancer.

You will need:

¼ cup eggshells or calcium magnesium tablets (ground up)
About 2 Tbs. or more coconut oil (there are other amazing reasons to use coconut oil)
1 Tbs. baking soda

Optional ingredients to add:

1 tsp. Castile soap (Castile soap is an olive oil based soap and its name is originated from Castile, Spain, a region renowned for its olive oil. It gives the recipe a smoother consistency. Anette uses Dr Bronners Castile soap).
1 tsp. sea salt (see my other antiseptic toothpowder with sea salt)
A few drops peppermint essential oil (use food grade only). This essential oil is amazing and so versatile and gives a fresh feeling in the mouth – you can read about the top 10 uses for peppermint essential oil).


Give the eggshells a rinse and boil them for a few minutes to get rid of the pathogens. Then air dry them. Grind up the shells or tablets in a coffee grinder until they turn into a fine powder. Combine the ingredients in a bowl, adding coconut oil until it reaches a smooth consistency (you can adjust the amount of the coconut oil). Add the optional ingredients if you want. Store in a jar. You can use a spoon to put the mixture on your tooth brush.

Read my other related articles:
1. How to Remove Plaque Naturally
2. How to Get Rid of Gum Infection (Gingivitis) Naturally
3. Why You Should Start Using Coconut Oil as a Toothpaste

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120 Responses to How To Use Eggshells to Remineralize Your Teeth

  1. Shelby says:

    Is it 1/4 cup egg shells before or after they are ground up?

  2. Brigitte says:

    Wow – this is marvellous..thanks heaps

  3. Beth says:

    Wouldn’t boiling leach out some minerals? When I dry my eggshells (I feed a homemade diet and use ground eggshells for the calcium and minerals), I bake them at 325f degrees for several minutes or until nice and crispy.

    • Jenny says:

      Hi Beth, I had a look in website and they say that “cooking does not reduce the amounts of most of the minerals in food, including calcium, phosphorus, magnesium, iron, zinc, iodine, selenium, copper, manganese, chromium and sodium … The exception is potassium, a mineral found in a wide variety of foods ranging from potatoes to fish, which can leach into cooking water” ( Since eggshells contain some potassium, it might be better to bake them as you do.

      • Pauline says:

        How many minutes should I do to bake the egg shells?

        • Jenny Hills says:

          If you want to dry them in the oven, preheat the oven to 300F (150 Celsius), spread the eggshells evenly on a baking sheet and bake for 5 to 7 minutes. The eggshells will mostly retain their color (white or brown), but may have a light tint, which is fine. Allow the eggshells to cool and then grind them.

      • Pauline says:

        Castille oil is hard to find,can I use another improvised ingredients?

        • Jenny Hills says:

          Castile soap is optional in this recipe (it gives a smoother consistency). If you don’t want to use it, you can just omit it from the recipe.

  4. Jeannie says:

    Do you need to remove the membrane inside the eggshell once boiled?

    • Jenny says:

      It is best to remove it as much as you can as only the eggshell has the benefits.

      • TheDude says:

        Other websites say to use the membrane. You better do some googling on this.

        • Jenny says:

          The membrane doesn’t have any benefits in this case so I don’t see the point of using it.

        • Bobbi says:

          I leave the membrane on. They actually sell capsules of eggshell membrane for joint problems and it’s expensive. That’s for internal use obviously, but it sure won’t hurt to leave it in and may benefit.

      • Evelyn says:

        I just want to say that I read where you shouldn’t remove the membrane as it contains lots of nutrients too. I actually think this is true because the membrane is like a placental sac which is part of the unborn babies nourishment. Some animals eat the placenta after giving birth and most lick it off their newborns. I’m erring on the side of Nature and leaving the membrane in. Anyway, I made some tooth powder and ground those eggshells in a coffee grinder and then pulverized them with a mortar and pestle but when I use the powder to brush my teeth, it’s all gritty and there’s tiny pieces of eggshell getting stuck in my teeth. What’s the deal?

        • Jenny says:

          Hi Evelyn, you just need to floss after brushing the teeth and it will solve the problem. It takes time to get used to brushing the teeth with this paste after getting used to brushing with regular toothpaste.

        • Manuel Aldape says:

          Grin them till it powder if it’s still got some shell .go to a Chinese store and buy a marble bowl that come with it and smash the shell till it becomes powder. Don’t know what they call that marble bowl. But doctors or Chinese use them to make medicine. I bought one it cost me 15.oo dollars works great.i think you probably know what I’m trying to say about the medicine bowl. I think some drugstore have a icon on their signs.

  5. joel says:

    how much powdred eggshell should be added?

    • Jenny says:

      Hi Joel, the recipe says ¼ cup eggshells, about 2 Tbs. or more coconut oil 1 and Tbs. baking soda (+ the optional ingredients as mentioned in the recipe).

  6. deb johnson says:

    Is there an experation date. Ex good for 2weeks ?

    • Jenny says:

      Hi Deb, it will last for a very long time (probably several months) as each ingredient has a very long shelf life.

  7. Sunshine says:

    How long can you keep it in the jar?

    • Jenny says:

      It will last for a very long time (probably several months) as each ingredient has a very long shelf life.

  8. joel says:

    1/4 cup of eggshell = how much POWDERED eggshell?

    • Jenny says:

      If the eggshells are tightly packed in the cup (1/4 cup), the ground amount will be slightly less than that.

  9. Jessie says:

    Is castile soap to be used is a soap bar or liquid soap?

  10. samuel says:

    Thanks i will try it…Samuels.

  11. SarahBeth says:

    What kind of coconut oil? Regular oil is solid at room temp and this recipe will be solid after cooling. The only way to be able to “spoon” this on a toothbrush is to use a liquid version which is missing a few health benefits.

    • Jenny says:

      You need to use the raw virgin coconut oil which is solid below 25 degrees Celsius. Even when it’s solid you can still use a spoon to put the mixture on the toothbrush and then it quickly melts in the mouth.

  12. Kim says:

    Does this actually BUILD enamel. I have worn mine away drinking lemon water every morning without realizing the damage 🙁

    • Jenny says:

      It remineralize the teeth but it takes time to see results. It’s not an instant fix. You can continue to drink lemon water, just use a straw.

    • Wayne says:

      If you drink anything acidic you can always neutralize it by swilling after with bi-carbonate of soda or anything alkaline. A wonderful mouth wash after cleaning your teeth in the morning and at night is Hydrogen Peroxide (HP) mouth wash. How to make it: – 12% food grade HP = 1ml added to water = 5ml and a dab of bi-carbonate of soda. Swill them round for 5 minutes (watch TV or something while swilling) and then spite. The HP kills bacteria (they produce the acid that dissolves teeth) the soda neutralizes any acid bacteria have produced. Use a dental brush between the teeth just before brushing and that will also stop 99% decay.

  13. Bernice says:

    Awesome!! I make my own toothpaste, I’ll be sure to add the eggshells

  14. nando says:

    Is it enough to skip flossing?

    • Jenny says:

      No, it doesn’t come instead of flossing. By flossing daily, you help remove plaque from the areas between your teeth where the toothbrush can’t reach. This is important because plaque that is not removed by brushing and flossing can eventually harden into tartar.

  15. Apalara Dolapo says:

    Thanks for the write-up, its really helpful. Please what are natural products someone can use to clear off pimples or spot?

    • RDF says:

      Unless you’re salicylate sensitive, try dissolving a plain supermarket aspirin in just enough water to do so, paint some on your spot with a little make-up brush (or whatever) and allow to dry. If your skin is very oily in general, use it overnight, if needed, but only on the oil-prone areas, NOT on any dry areas you might have because they will crack. Otherwise – if you just have an oily spot or two – apply to them only, and rinse with cool water after about ten to fifteen minutes or so. Used as an additive to your daily cleanser it should prevent further break-outs, but be sure to rinse well. Remember, DO NOT use an ‘oil-free’ cleanser as this will only make your skin produce yet more oil. Try the most basic cleanser there is ~ plain old bath soap, preferably one with a bit of moisturiser in it ~ like Dove or similar, and be gentle, because unless you’re in the throes of puberty or menopause, excess oil production is in fact usually caused by scrubbing too much, drying your skin out too much, and being too rough with it, thus leaving it rubbed raw, producing it’s own oils like crazy to repair itself, with your pores gaping in horror at the rough treatment and open to accumulating dirt. After rinsing off your cleanser with cool water, always follow with a light astringent, and keep it in the fridge so it’s cold, for that will close your pores. Clean your skin certainly, but don’t go overboard because again you will only make the sebaceous-glands produce more oil. And if you’re prone to a lot of pimples you should stay as far away from foundations, of any sort, as you can get — only bare, clean (but sun-protected) skin can repair itself, and – sorry – but the make-up companies are lying to you when they claim otherwise (our skin is not meant to wear foundation, and not everyone can on a daily basis — many people can’t wear it at all, and you may be one). You can also try ‘tricking’ the skin with a daily oil moisturiser (yes really) after your toner/astringent ~ a few drops of a light almond-, sesame- or olive-oil can work wonders; and of particular importance is that you keep up the good oils in your diet ~ plenty of plant sterols from seeds, legumes and nuts, and oily fish. But do keep up a healthy diet in general, because you need to repair your skin from the inside, out — products put on it alone will NOT do the job. So eat lots of fresh vegetables and fruit, be light with the salt and saturated-fatty meats (but your body still needs both so don’t cut them out altogether), keep up your protein levels, and drink plenty of water. Along with your daily exercise (remember, the more you sweat, the cleaner your skin), do daily facial yoga, with a vigorous facial-massage afterwards — it does not cause wrinkles ~ quite the contrary, for it will stimulate blood-, O2- and nutrient flow to your skin and help to rebalance everything. Take a *quality* multi-vitamin & mineral supplement if necessary.

      And do yourself a favour and stay away from any so-called ‘oil-control’ product from some cosmetic company, because they of course have a vested interest in keeping you oily and breaking-out, so they can sell you yet more crap, which is why their products all rob the skin of the essential oils it needs to repair itself ~ including the oils it needs to repair and prevent pimples, as counter-intuitive as that seems.

      Good luck!

  16. Amie Harris says:

    Can i use something besides coconut oil? I’m allergic to coconut. My husband and I want to tr y this, I’d hate to make it for him and me not being able to get the benefits.

    • Jenny says:

      Hi Amie, I’m not really sure as the reason coconut oil is used here is due to it’s antibacterial properties and its ability to reduce the chances of developing tooth decay. I’m thinking maybe to omit the coconut oil from the recipe and increase the amount of Castile soap for a smoother consistency of a paste. Otherwise you can use only the dry ingredients (eggshells, baking soda, sea salt) and then use it as a tooth powder.

    • April says:

      If you’re allergic to cnut, it doesn’t necessarily mean you’re allergic to the oil. The oil lacks the protein which is what causes allergy.

    • Elisa says:

      My suggestion is to see if your skin reacts to the coconut. I stay away from coconut in foods because it can make my mouth (and me) itch, but I have no reaction to coconut oil.

  17. ida says:

    What about bone loss in gums? Does this help?

  18. Courtney Gramza says:

    Does it matter what eggs you use?

    • Jenny says:

      Hi Courtney, eggs from organic, free-range chickens are the best, but of course you can use regular ones.

  19. lolly0816 says:

    is it only eggshells and coconut oil

  20. Simmy says:

    Is it compulsory to use baking powder in the toothpaste as i want to use it for my 4 years old kid.

    • Jenny says:

      The role of baking soda is that it’s a great alkalizer and helps to neutralize acids in the mouth as well as eliminating bad breath. It’s also a great mild abrasive that effectively removes surface stains and plaque from your teeth and make them appear whiter. You can of course eliminate it if you want though I believe it will reduce the efficacy of it.

  21. Kiersten says:

    Instead of coconut oil can I us lemen juice

  22. April says:

    I love this article. Read and reread. Thx for sharing!

  23. kaitlyn says:

    Just discovered a few black spots, small, on my molars. Definately going to use this to see if i can get those back to nonexistant.

  24. ADITYA SHANKAR says:

    Sir, how can i overcome with my bad breathing?

  25. Daisy says:

    baking powder and baking soda is defferent? Sorry i dont have any idea, about that baking soda. It is ok to use real olive oil?! I cant go outside to look for the ingredients, i have only this baking powder, olive oil and the eggshells from the kitchen of my employer…i wanted to try these remedies, please help me! Thanks!

    • Jenny says:

      Hi Daisy, baking powder and baking soda are two different products. In this recipe you use baking soda. Adding Castile soap is optional to give the recipe a smoother consistency. Don’t replace it with regular olive oil.

  26. Nikki Morrile says:

    Since baking soda is listed as an ingredient, is baking soda safe to use everyday?

  27. D McQ says:

    Hello, I’m just curious, I’ve been going through articles on this subject and can’t seem to find the answer I’m looking for as far as the fillings I already have. Have had them for years now, but I’m wondering if I can still use this method to help my other teeth even with the fillings in the ones already treated by the dentist. Just had the cleaning done a few months back. Anything I could find on this I would strongly appreciate! Great article! Would LOVE to not have to worry about a HUGE dental bill!

    • Jenny says:

      Read the second answer of Maria the dental assistant here.

    • Wayne says:

      Hello D McQ! I had the same concern i.e. fillings that speed-up tooth decay as the filling provides crevices that bacteria love. I know how to stop it dead.

      A wonderful mouth wash after cleaning your teeth in the morning and at night is Hydrogen Peroxide (HP) mouth wash. How to make it: – 12% food grade HP = 1ml added to water = 5ml and a dab of bi-carbonate of soda. Swill them round for 5 minutes (watch TV or something while swilling) and then spit. The HP kills bacteria (they produce the acid that dissolves teeth) the soda neutralizes any acid bacteria have produced. Use a dental brush between the teeth just before brushing and that will also stop 99% decay. I have been using this method for over 2 years and get dentist treatment at Exeter Dentistry Hospital (that’s where they train new dentists). They said I have no plaque at all and all tooth decay has stopped. I told them about the HP mouth wash and they said that was fine, just make sure you don’t use too strong HP as it can make your gums tingle – what that means is that as a corrosive substance it does to your gums what it does to the bacteria, of course bacteria are more delicate so hence you only need a weak HP solution. If you try it and your gums tingle too much, dilute more. Apart from that the head dentistr lecturer said I was doing a good thing.

  28. Jennifer says:

    Hi, I was wondering how much to give a child and adult daily? And do I add to food? Drinks?

    • Jenny says:

      Hi Jennifer, in this article the eggshells are used as a toothpaste and not internally. However eggshells can be used as a source of calcium in the diet (see more about it here). From what I’ve read in other websites, you can consume around 3/4 of tsp. a day, and no more than 1 tsp. If you consume in your diet calcium from other sources you can reduce the amount to 1/2 tsp. a day (1/2 teaspoon equals approximately 400 mgs calcium). Consume it by mixing in a small amount of water with a meal. You need to divided the dosage in 3 servings with meals and avoid taking the amount in one time as it’s too much for the body to handle and can irritate sensitive digestive system. To see the recommended daily intake of calcium per age and gender, see here.

  29. Raven says:

    Wow! Who knew that eggshells had some use after all? Definitely adding this to my homemade toothpaste. One question: what if you don’t have a coffee grinder?

    • Jenny says:

      You can use a food processor, blender or a nut mill. Please note that some blenders will not grind the eggshell into a fine enough powder.

    • Wayne says:

      Pestle and mortar is a great way to grind in to dust. You get exercise too. Bonus!

      • AKjim says:

        Sizing it through a screen after grinding works very good as well, I’ve used fabric nylon silk screen with fine opening and it worked great. Still a little gritty but no more than baking soda, it removes all of the larger pieces.

  30. Sarah says:

    It will keep longer, and be more sanitary if you use something like the Infantino Fresh squeezed station to put it in pouches with twist tops…. very like toothpaste tubes.

  31. Natali says:

    Hi Jenny! I have been using the virgin olive oil and baking soda and sea salt for my teeth. Olive oil and tea tree oil both have antibacterial properties. We can try to replace the coconut oil with this oils. Thanks for every explanation good luck

  32. Claudia says:

    Can this toothpaste helps remineralize a chipped or cracked tooth? How long would take to regrow and what suggestions can you give to heal it properly? At this moment has no cavities but the crack is in between one tooth with a crown and the cracked tooth has a filling in the center. Thank you!!

  33. Jenny says:

    I don’t know. I couldn’t find specific information about it. I apologize I cannot be more helpful.

  34. Benje says:

    I just need to repair my cavities, will grinding the eggshells and mixing it with regular toothpaste work.

    • Jenny says:

      It depends what size your cavities are. If a cavity is neglected and is not treated at an early stage, it won’t work as the cavity is too big.

      • Nicole says:

        In the book “Cure Tooth Decay” by Ramiel Nagel, he shows two studies done by Dr. Weston Price on patients with large cavities where the nerve and pulp were exposed. After 4-6 months, x-rays showed that a healthy layer of dentin had formed, protecting the pulp. However, if there is a large cavity hole, the hole will not fill. He recommended requesting the dentist to then fill the hole without any drilling. In these cases of serious cavities, he recommended sticking to the diet strictly for 4-6 months, after which a less strict maintenance diet will suffice. I highly recommend reading this book for more information.

  35. katherine says:

    can this be use on kids she is 3

    • Jenny says:

      The child needs to be mature enough to understand not to swallow the toothpaste.

      • Vicky says:

        Hi, Jenny. If I do not use the optional castile soap, the rest of the ingredients are edible and even healthy. Would it be ok then if the child does swallow it, out of an inability to spit it out?
        Also, I cannot floss my child´s teeth (because they are extremely tight) to remove the tiny gritty pieces left after brushing with eggshell paste. But by the same principle of all ingredients being edible and healthy, the only problem would only be the uncomfortable feeling of the ground eggshells on the teeth. Is this correct? Thank you. I appreciate your time and help very much.

        • Jenny Hills says:

          The rest of the ingredients are indeed edible so I don’t believe there should be any problem if the child swallows a small amount of it. If flossing is impossible and to prevent the feeling of grittiness, after brushing you can fill in a glass of water and let the child rinse the mouth and spit the water out. I know that many dentists recommends for kids not to rinse their mouth after brushing the teeth with regular toothpaste to let it do the job, although others claim that washing the mouth after brushing it is good to wash away all the bacteria that came off your teeth during brushing. However with the texture of this toothpaste it might not be possible not to rinse it. Otherwise try to use a small amount of the paste.

  36. Laurel says:

    How long does it take to heal a cavity?
    I’ve been doing this for about a week with my daughter who has a cavity on the side of her tooth that is being eaten away. Anxious to see improvement, but would like to have a time frame in mind. Thanks

    • Sham says:

      Do you see any improvement

    • Nicole says:

      Laurel, according to Ramiel Nagel in his book, “Cure Tooth Decay”, some improvement can be seen and felt in as little as 24-48 hours. However, in the case studies done by Dr. Weston Price that he quotes, x-rays were done before the protocol and after 4-6 months.

  37. Shelly says:

    I have started eating eggshell . It’s a habit now. Does it hurt

  38. Donna says:

    This is fascinating! I raise my own chickens and have been composting the eggshells… up until NOW, that is! Looking forward to trying this!

  39. Juliana says:

    can I put a little of this toothpaste in my night guard and sleep with it to help my teeth?

  40. leah says:

    Go figure who found this idea??? So I boil dozen eggs eggs each week and now i can keep the egg shell for smoothies and make toothpaste. do you store the egg shell powder in refrigerator or can i just grind into a powder and leave it in a mason jar?

    Thanks for all the info. will give it a try.

  41. Juliana says:

    I am using the eggshell toothpaste and it is definitely helping to heal my tooth decay. However, my toothbrush gets all clogged/mucked up with it. Also, I have very old pipes that clog all the time and I don’t want to spit this toothpaste down my sink. Any suggestions?

    • Rita says:

      Pour some white vinegar down your pipes after each brushing if you are concerned about the clogging. I use turmeric (for whitening) AND ground eggshells. I have old pipes as well and so far so good!!

  42. Dayana says:

    So should you use only the homemade toothpaste or regular store toothpaste mixed with the Homemade Toothpaste? Also will this affect in any way if you are prescribed by your dentist Pure fluoride 5000 if so how should the homemade toothpaste be used? How many times a day should you brush with this? Is it ok to use more than 1/4 of the eggshells?

    • Jenny Hills says:

      1. This is a substitute to regular store toothpaste. You don’t mix them. 2. You use this recipe to brush your teeth twice a day, just like a normal toothpaste. If you are already prescribed by your dentist another toothpaste, then I don’t think there is a point to use this recipe. If you still want to use the recipe then you can alternate between the two, for example: use your prescribed toothpaste in the morning and the recipe in the evening. 3. You can use more then 1/4 cup eggshells but then you will need to adjust the amounts of the other ingredients to create the right consistency.

    • Wayne says:

      While dentists are able too pop some filler in teeth, many do not stipulate the problem that creates tooth decay. It’s a shame because tooth decay does never need to be. Here’s how decay works:- 1. A person eats and this leaves residual natural sugars in the mouth. 2. Bacteria love natural sugars and if these residues of food are not completely removed during cleaning (almost impossible if you have cavities and filling crevices, then bacteria have lunch. 3. Bacteria poo out acid. The more bacteria and food the more acidic poo. 4. Teeth are made of calcium and acid dissolves calcium. In reality tooth decay is not from bacteria eating teeth, but a chemical process i.e. acid reacting with calcium (like soda and vinegar, same principle). 5. If left unchecked the acid creates cavities. Toothbrushes don’t get in to cavities, but a alkaline mouthwash can!

      As a common myth is sugar causes tooth decay directly. False! Not getting all the sugar out is the problem and that is impossible with just a toothbrush and any type of toothpaste (natural or synthetic). The process to keep your teeth is: 1) dental brush or floss between teeth before brushing. 2) brush the teeth using a slight abrasive (bi-carb of soda, salt, eggshells, plastic micro-beads that later harm wildlife (this last comment is a joke. Can’t believe that someone thought micro-beads were a good thing!)); 3) mouth wash with an alkaline substance to neutralize the acid. 4) add a dilute of Hydrogen Peroxide to the mouthwash to kill bacteria – the less of them there are the less acid they poo-out that corrodes your beautiful enamel.

      As a last thing, watch out for most dentists, they have a vested interest in making your teeth rot and they can be crooks like anyone that has a mortgage on a massive house. You are a cash cow to them so please! DO YOUR OWN RESEARCH! That’s what the net if for. 😉

  43. Amy-Lou says:

    Hi i have seen your article on eggshells do the eggshells reverse cavities is that what it means by heal? i have a cavity and i am petrified of the dentist i do hope this works in the reversing process

    • Jenny Hills says:

      From what I understand about remineralization, it’s about tiny holes that are called non-cavitated carious. Lost minerals can result in cavities but the enamel is able to repair itself and with the right preventative care, you can continuously remineralize it before it goes away. Wikimedia talks about the process of remineralization to non-cavitated carious, which are early lesions or a white spot lesions that are demineralized lesions without evidence of cavitation. You can read more in depth about it here.

  44. Julie says:

    I didn’t find this helpful to me, as far as making my teeth any whiter or relieving sensitive teeth/gum issues. However, it IS an excellent exfoliating facial scrub! Serendipity, huh? Thanks for the recipe.

  45. Wayne says:

    This article was very interesting and it’s odd how I thought of eggshells maybe as the solution to a problem I have i.e. making a toothpaste with a natural abrasive.

    At the moment I have tried to make a tooth-paste that is really a soap (foaming properties to suspend the abrasive within). To get rid of the soap taste add loads of peppermint (30 – 40 drops per 96g bar) and add Stevia = 4g per bar. That gets rid of the soap taste. However, adding bi-carbonate of soda destroys the foam making property of the tooth-paste (soap). This is why many natural toothpastes (I discovered) are flat i.e. the soda debilitates foaming. Sigh! Maybe eggshells are the answer i.e. they may not dissolve as quickly as Bi-carb? Time for some more experimenting. I WILL GET THIS RIGHT! Failing that getting walnut shell powder might be an option, but that stuff is sold in big particles – too big even for a bath scrub. Sigh!

  46. David Kenny says:

    Which school of dentistry in the Philippines sells
    an egg shell based toothpaste?
    I live here and would buy it

  47. Angela says:

    Do I have to boil whole eggs, or can I bake/boil the broken shells from the eggs I fry up every morning?
    This is all very fascinating, thank you so much for all of the information!

  48. Karen says:

    Hi Jenny, not sure why I didn’t think of adding powered egg shells to my tooth paste I make, maybe because I think of the grit as being too sharp.

    I fractured my foot in 2013 and at that time because of an over active monthly cycle, my foot was not healing, in 4 months. so I added egg shells I coffee-bean blendered to my diet, which was still like eating sand, but 4 weeks later my foot was finally healing.

    So I know the true benefits of the egg shell calcium, but adding that sand to a paste to brush the teeth, figure it would cause too many pits to the teeth. However I could use a good cleaning. ((BUT will NOT use that awful soap, I have an all natural cleaner, made from corn, which is nano tech small, so BINGO going to use that. Right now I use baking soda, coconut oil and a drop of peppermint oil, to brush my teeth.

    I had a cavity drop out of my top tooth two years back
    and have to be extra careful of that hole, and thinking I might just make up
    a paste of egg shells, coconut oil, and fill the hole, see what happens = )

    oh and while I’m thinking about using some egg shells
    might get myself some bone knit plant to add to it too.

    • Jenny Hills, Nutritionist and Medical Writer says:

      With your cavity it’s best to go to your dentist as it may be too large to be remineralized. As I mentioned to another reader previously, from what I understand about remineralization, it’s about tiny holes that are called non-cavitated carious. Lost minerals can result in cavities but the enamel is able to repair itself and with the right preventative care, you can continuously remineralize it before it goes away. Wikimedia talks about the process of remineralization to non-cavitated carious, which are early lesions or a white spot lesions that are demineralized lesions without evidence of cavitation. You can read more in depth about it here.

  49. j. says:

    instead of brushing with eggshell, Can just eating the pulverized eggshell remineralize our teeth?

    • Jenny Hills, Nutritionist and Medical Writer says:

      I personally don’t know about the effect of eating calcium-rich foods on the process of remineralization, but a study from 2003 found out that: “… a diet lower in added sugars and fermentable carbohydrates and high in calcium-rich cheese may favor remineralization”.

  50. S. says:

    does this have any effect on gum health/receding gums/gum disease?

  51. Ammy says:

    Dr. Bronner’s is not castile soap. In fact that brand does not sell any castile soap whatsoever. Castile soap is literally olive oil ONLY soap. Read the ingredient list – it should read 1st olive oil, 2nd water, 3rd lye, and then any additives such as aloe, milk, essential oils, herbs, etc. and that’s it. NO OTHER oils such as caster, hemp, sweet almond, etc. etc.

    I highly recommend not using that brand ever because if they can so boldly and blatantly lie like that there is just no trusting anything they say.

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