Dr. Michelle Jorgensen
How to Remineralize Teeth: A Dentist's Guide to What Works (and What Doesn't)
The short answer: yes, teeth can remineralize. Your enamel gives up minerals and takes them back every single day. You remineralize teeth by tipping that daily exchange in your favor, and four things decide which way it runs: what you eat, how often you eat, what your saliva has to work with, and what you brush with.
I spent the first ten years of my career doing what I was trained to do. Find the hole. Fill the hole. See you in six months. My patients kept asking a better question than I could answer: why do I keep getting cavities when I brush and floss? This article is the answer I wish I'd had for them then.
One thing up front, because the internet is loose with this topic. Remineralizing is not regrowing. It is putting minerals back into enamel that is still there. I'll show you exactly where that line is.
What Is Tooth Remineralization?
Enamel is the hardest thing in your body. About 96 percent of it, by weight, is mineral (Lacruz et al., Physiological Reviews), and that mineral has a name: hydroxyapatite, the mineral your teeth are made of. It is built from calcium and phosphate.
Here is the part most people never hear. Enamel is not static. All day long, calcium and phosphate move out of the enamel surface and back into it. Remineralization is the return trip: minerals carried by your saliva settling back into the surface. Demineralization is the trip out. Your teeth are always doing both.
Enamel is a balance, not a countdown.
Demineralization of Teeth: What Pulls Minerals Out
Every time you eat or drink, your mouth turns more acidic. The acid comes from two places.
- The food or drink itself. Soda, sports drinks, kombucha, juice, lemon water and flavored waters are all acidic before they ever reach a tooth. I keep a full list in the pH of popular drinks.
- Plaque bacteria. The bacteria living on your teeth eat sugar and refined carbohydrates, and they make acid as a by-product. It is not the sugar that softens enamel. It is the bacteria eating the sugar.
Below a pH of about 5.5, calcium and phosphate start to leave your enamel (Dawes, Journal of the Canadian Dental Association). Root surfaces and dentin are softer and begin losing minerals at a higher pH, which matters if your gums have receded.
I walk through the whole process in this video:
What Puts Minerals Back: Saliva and the Stephan Curve
Then saliva goes to work. Think of it as the delivery truck. It dilutes and neutralizes the acid, and it carries calcium and phosphate back to the tooth surface (Dawes et al., Archives of Oral Biology).
Dentists have charted this since the 1940s. It is called the Stephan curve. Within minutes of eating, the pH on your teeth drops. Then it climbs back, and that recovery takes 30 minutes or more (Bowen, Odontology).
Why How Often You Eat Matters
Each time you eat or sip, the clock resets and your saliva starts over. Three meals gives your teeth long, quiet stretches to take minerals back in. Grazing and sipping never lets the repair finish.
A patient once told me, "I only drink one soda a day. It just lasts me all afternoon." That one soda was doing the work of six.
How much sugar you eat matters. So does how many times a day your teeth meet it (van Loveren, Caries Research). Same foods, fewer occasions. That alone changes the math.
Can You Remineralize Teeth? What Can Come Back and What Can't
This is the honest part, and it is where most articles on this topic go wrong.
The first visible sign of mineral loss is often a chalky, matte white spot. The surface is still intact. At this stage it is a minerals game, and your daily habits matter most. The American Dental Association's own guideline recognizes non-drilling approaches for these early, non-cavitated spots (Slayton et al., JADA).
Once the surface breaks and a hole forms, minerals alone cannot close it. That is your dentist's job, and a small filling beats a big one.
Can enamel grow back?
No. Enamel has no living cells, so your body cannot make more of it. What enamel can do is take minerals back into the structure that is still there. That is the difference between rebuilding enamel, which nobody can do, and remineralizing it, which your mouth does every day.
A white spot is an opportunity. A hole is a repair job for your dentist. If you are weighing a specific cavity, I cover that separately in what you can and can't do about a cavity at home.
How to Remineralize Teeth: The Four Ways
Four things decide which direction your enamel is running. Three of them are habits. One comes in a jar.
1. What you eat: minerals on the inside
Your saliva can only deliver minerals your body actually has. Calcium and phosphorus are the raw materials. Magnesium helps your body use calcium. Fat-soluble vitamins do the delivering: vitamin D3 helps you absorb calcium, and vitamin K2 switches on the proteins that bind calcium into bone. If you suspect you run low, start with why vitamin D runs low.
- Calcium and phosphorus: dairy, sardines and salmon with bones, leafy greens, eggs
- Magnesium: nuts and seeds, black beans, greens, avocado
- Vitamin D3: sunshine, oily fish, egg yolks, cod liver oil
- Vitamin K2: grass-fed butter, aged cheese, egg yolks
- Vitamin A: liver, egg yolks, butter, orange vegetables
These vitamins need fat to be absorbed, so the butter on the vegetables is doing a job. More ideas in foods that are good for your teeth.
2. How often you eat: give your teeth a break
Aim for meals with quiet time between them, and make water your between-meal drink. Watch the sneaky ones. Crackers, pretzels, dried fruit, fruit snacks and granola stick in the grooves and feed plaque bacteria for a long time. I once met a family buying organic gummy bears by the case. Sticky sugar is sticky sugar, no matter what the label says.
- End a meal with something crunchy: cucumber, apple, carrot, celery
- Pair crackers with cheese or nuts
- Lemon water once in the morning, then done
- Smoothie with breakfast, not sipped until lunch
- After anything acidic, wait 30 to 60 minutes before brushing, and swish with water while you wait
3. Your saliva: protect the delivery truck
A dry mouth is a mouth that cannot remineralize. Dry mouth is common and often overlooked. Hundreds of medications cause it. So do mouth breathing, stress, hormones and simply getting older. Sip plain water through the day, breathe through your nose, chew your food well, and reach for sugar-free gum or mints after meals, because chewing is what makes saliva. If this sounds like you, read why dry mouth is so hard on teeth.
4. What you brush with: minerals on the outside
Twice a day, something sits against your enamel for two minutes. It may as well be the mineral your teeth are made of.
Hydroxyapatite in a tooth powder or paste is the same calcium phosphate mineral as enamel. In studies it attaches to the tooth surface and settles into microscopic rough spots, which is why teeth feel so smooth after brushing with it. It can also settle into the tiny open channels in exposed dentin, which is why many people with sensitive teeth notice a difference (Limeback et al., Biomimetics).
What about fluoride? Fluoride hardens the enamel you have left. Hydroxyapatite supplies the same kind of mineral that was lost. Reinforcing the wall versus replacing the missing bricks. Both have clinical trials behind them. In an 18-month randomized trial in adults, a 10 percent hydroxyapatite toothpaste performed as well as a fluoride toothpaste (Paszynska et al., Frontiers in Public Health), and a 2025 independent review reached a similar conclusion (Chatzidimitriou et al., Journal of Dentistry). Several of these trials were funded by a toothpaste maker, which is worth knowing. I go deeper in hydroxyapatite vs fluoride and does hydroxyapatite work.
Whatever brand you choose, here is what I look for on the label:
- Hydroxyapatite, with the amount stated. The clinical trials used 10 percent.
- Xylitol instead of sugar or artificial sweeteners (is xylitol safe?)
- A gentle polisher such as calcium carbonate
- No SLS. Foam is not cleaning.
If you brush with a fluoride-free hydroxyapatite product, spit out the extra and don't rinse, so the minerals stay on your teeth longer. With a fluoride toothpaste, follow the label. Step by step directions are in how to use tooth powder, and if you are choosing a format, see tooth powder vs toothpaste.
Years ago I couldn't find a toothpaste I would give my own kids, so I made one in my kitchen. Powder, because it needs no water, foaming agents or fillers. That left room for what mattered: 10 percent hydroxyapatite, xylitol and a gentle mineral polisher. More than a million jars later, it is still where I tell people to begin, because it is the one change that takes no extra time. You already brush.
Remineralizing Tooth Powder
Dentist formulated with 10 percent hydroxyapatite, xylitol and a gentle mineral polisher. Fluoride free and SLS free. About 200 brushes per jar, roughly three months. Where most people start.
How Long Does It Take to Remineralize Teeth?
It depends on where you are starting and how consistent you are, so take these as what people commonly report, not a promise.
- 1 to 2 weeks: teeth often feel smoother
- 2 to 4 weeks: sensitivity often eases
- 3 to 6 months: ask your dentist to recheck any "watch" spots. What you can't see, your dentist measures.
Consistency beats intensity. A simple routine you keep will do more than a perfect one you drop in a week.
A Simple Daily Routine
- Morning: brush with hydroxyapatite for two minutes with gentle pressure, spit and don't rinse, and take vitamin D3 and K2 with a breakfast that has some fat
- Daytime: eat meals rather than all-day snacks, finish drinks in one sitting, and follow food with water or a sugar-free mint
- Night: floss first, brush, spit and don't rinse, then an alcohol-free final rinse a few minutes later and nothing but water until morning
Want this as a printable checklist? The routine, the diagrams in this article and three changes you can make tonight are all in my free 22-page guide. Get the free Tooth Remineralization Guide.
When you are ready to build on the basics, the rest of my own routine is a remineralizing mouthwash as a final rinse, hydroxyapatite floss between teeth, RE-MINTS for after meals away from home, a dry mouth spray if your mouth runs dry, and minerals with vitamin D3 and K2 from the inside. You don't need all of it. Add a piece when it solves a real problem for you.
The printable routine, every diagram, and three changes you can make tonight. Free, 22 pages.
Get the free guideWhen to See Your Dentist
Home care and professional care are teammates, not rivals. Call your dentist soon if you notice:
- Sensitivity to heat
- Pain when you bite down, or when you let go
- Cold sensitivity that lingers 20 to 30 seconds
- One tooth that keeps acting up
- A dark spot, or a rough edge your tongue keeps finding
And if your dentist says "we'll watch that spot," ask four questions:
- Is it in the enamel or the dentin?
- Is it getting bigger?
- Can we monitor it, and when do we recheck?
- What are my options?
A good dentist will be glad you asked. If you want more on building teeth that hold up over time, read how to build cavity-resistant teeth.
Prefer a paste to a powder? My Remineralizing Toothpaste follows the same label checklist in a tube.
Remineralizing Toothpaste
The same hydroxyapatite approach in a familiar paste, with our PROtektin prebiotic complex. Fluoride free and SLS free. Mint for adults, mixed berry for kids.
The Bottom Line
Minerals leave. Minerals come back. What matters is which direction is winning. Eat to supply the minerals, give your teeth quiet time between meals, protect your saliva, and brush with the mineral your teeth are made of. Pick one thing from this article and do it tonight.
Download the free Tooth Remineralization Guide for the printable routine and every diagram in one place.
This article is for education only. It is not dental or medical advice and does not replace an exam by your own dentist. Dr. Michelle Jorgensen is the founder of Living Well with Dr. Michelle, which makes the products mentioned here.
Dr. Michelle Jorgensen, DDS
Dr. Michelle Jorgensen is a dentist, author, and the formulator behind Living Well's fluoride free, hydroxyapatite oral care line, with over 1 million jars of tooth powder sold. She comes from a family of dentists, is a mom and a grandma, and teaches families how teeth actually work so they can look after them at home and partner well with their own dentist.
Frequently asked questions
Can you remineralize teeth?
Yes. Enamel gives up minerals and takes them back every day. Remineralization is the return trip, where calcium and phosphate carried by your saliva settle back into the enamel surface. You support it by lowering how often your teeth meet acid, keeping saliva flowing, eating mineral-rich foods, and brushing with hydroxyapatite. It works on enamel that is still there. It does not fill a hole.
How do you remineralize teeth naturally?
Four habits do most of the work. Eat foods that supply calcium, phosphorus, magnesium and vitamins D3, K2 and A. Eat meals instead of grazing, so saliva has quiet time to work. Protect your saliva by staying hydrated, breathing through your nose and chewing well. And brush twice a day with a toothpaste or tooth powder that contains hydroxyapatite, the mineral your teeth are made of.
How long does it take to remineralize teeth?
It varies with your starting point and how consistent you are. Many people notice smoother teeth within one to two weeks and less sensitivity within two to four weeks. Changes to early white spots take longer, so ask your dentist to recheck any watch spots in three to six months.
Can enamel grow back?
No. Enamel has no living cells, so the body cannot make more of it once it is gone. What enamel can do is take minerals back into the structure that remains. That is why remineralizing is possible and regrowing is not.
What is demineralization of teeth?
Demineralization is the loss of calcium and phosphate from the tooth surface. It happens when the pH in your mouth drops below about 5.5, either from acidic food and drink or from acid made by plaque bacteria feeding on sugar. It is normal and happens after every meal. Problems start when minerals leave faster than saliva can return them.
What foods help remineralize teeth?
Foods that supply the raw materials and the vitamins that deliver them: dairy, sardines and salmon with bones, leafy greens and eggs for calcium and phosphorus, nuts, seeds and beans for magnesium, oily fish and egg yolks for vitamin D3, grass-fed butter and aged cheese for vitamin K2, and liver, eggs and orange vegetables for vitamin A.
Is hydroxyapatite as good as fluoride for remineralizing teeth?
In head-to-head clinical trials, a 10 percent hydroxyapatite toothpaste performed as well as fluoride toothpaste, and a 2025 independent review found no significant difference. Fluoride hardens the enamel you have left, while hydroxyapatite supplies the same kind of mineral that was lost. Several of the trials were manufacturer funded, which is worth knowing.
Does remineralizing mean I can skip the dentist?
No. Cleanings, X-rays and a trained eye catch things you cannot see or feel. Home care works best alongside professional care, and a hole in a tooth always needs a dentist.
Sources
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- Bowen WH. The Stephan Curve revisited. Odontology. 2013;101(1):2-8. doi.org/10.1007/s10266-012-0092-z
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- Dawes C, Pedersen AM, Villa A, et al. The functions of human saliva. Arch Oral Biol. 2015;60(6):863-874. doi.org/10.1016/j.archoralbio.2015.03.004
- Slayton RL, Urquhart O, Araujo MWB, et al. Evidence-based clinical practice guideline on nonrestorative treatments for carious lesions: a report from the American Dental Association. J Am Dent Assoc. 2018;149(10):837-849. doi.org/10.1016/j.adaj.2018.07.002
- Paszynska E, Pawinska M, Enax J, et al. Caries-preventing effect of a hydroxyapatite-toothpaste in adults: an 18-month double-blinded randomized clinical trial. Front Public Health. 2023;11:1199728. doi.org/10.3389/fpubh.2023.1199728
- Chatzidimitriou K, Theodorou K, Seremidi K, et al. The role of hydroxyapatite-based, fluoride-free toothpastes on the prevention and the remineralization of initial caries lesions: a systematic review and meta-analysis. J Dent. 2025;156:105691. doi.org/10.1016/j.jdent.2025.105691
- Limeback H, Enax J, Meyer F. Clinical evidence of biomimetic hydroxyapatite in oral care products for reducing dentin hypersensitivity: an updated systematic review and meta-analysis. Biomimetics. 2023;8(1):23. doi.org/10.3390/biomimetics8010023
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- Myneni VD, Mezey E. Regulation of bone remodeling by vitamin K2. Oral Dis. 2017;23(8):1021-1028. doi.org/10.1111/odi.12624