It is a fair question, and it has a better answer than most people expect. Remineralizing gum is not a wellness trend with a marketing budget. It works through a mechanism the American Dental Association endorses by name, built on an active ingredient that has matched fluoride for cavity prevention in clinical trials and outperformed it for repairing the white marks left behind by braces.
Here is the short version: chewing sugar-free gum after meals floods your mouth with saliva, which is the body's own enamel-repair system. A remineralizing gum adds nano-hydroxyapatite — the exact mineral your enamel is made of — so your teeth are not just rinsed, they are resupplied. And it does this during the twenty to sixty minutes after eating, when your enamel is actively losing mineral and your toothpaste is sitting in a tube in the bathroom.
That window is the whole argument. Brushing gives your teeth about four minutes of attention a day. The acid gets two hours or more. NanoChew was built to close that gap.
Quick answer
Yes. Chewing sugar-free gum after meals raises saliva flow to roughly 10–12 times resting rate, and the ADA credits 20 minutes of it after meals with helping prevent tooth decay — its caries management guidance tells patients directly to "chew sugar-free gum with xylitol." Add nano-hydroxyapatite and you are supplying the actual mineral enamel is built from: a 2024 meta-analysis in the Journal of Dentistry found hydroxyapatite effective at preventing cavities without fluoride, three separate trials found it non-inferior to fluoride toothpaste, and it outperformed fluoride for remineralizing white spot lesions. A double-blind trial of 107 people on a hydroxyapatite chewing gum found significant reduction in sensitivity. NanoChew delivers all of it: nano-hydroxyapatite, organic xylitol, propolis and natural calcium, 2–3 pieces a day, $29.99 for 60 pieces, 10% off on Subscribe & Save.
What's in this guide
- Three mechanisms, all supported
- The saliva engine, and why the ADA endorses it
- Xylitol: the sweetener cavity bacteria can't use
- Nano-hydroxyapatite: the mineral your enamel is made of
- The evidence, at a glance
- Why gum beats toothpaste for this job
- What the ADA says about reversing early decay
- Who gets the most out of it
- How it compares to other remineralizing ingredients
- What separates a good remineralizing gum from a bad one
- How to spot a brand overselling
- What to pair it with
- What to expect, and when
- Why NanoChew
- The daily routine
- Frequently asked questions
- Sources
Key takeaways
- The ADA's caries management guidance tells patients to "chew sugar-free gum with xylitol," noting it promotes salivary flow and remineralization.
- Chewing raises saliva flow to roughly 10–12 times resting rate. Saliva carries the calcium and phosphate that rebuild enamel mineral.
- A 2024 Journal of Dentistry meta-analysis concluded hydroxyapatite is effective as an anti-caries active ingredient without fluoride.
- Three clinical trials found hydroxyapatite non-inferior to fluoride toothpaste — in children, orthodontic adolescents and adults — all rated low risk of bias.
- Hydroxyapatite outperformed fluoride for remineralizing white spot lesions after orthodontic treatment.
- Early trials reported 35–56% caries reduction in children using 5% hydroxyapatite toothpaste versus placebo.
- A double-blind trial of 107 people on a hydroxyapatite chewing gum found significant sensitivity reduction — the format is clinically tested.
- The ADA's 2018 guideline states early non-cavitated lesions "have the potential to reverse by means of chemical interventions."
- Gum gives enamel 20–30 minutes of contact per piece against two minutes of brushing, and it does it when the acid is actually there.
Three mechanisms, all supported
"Does it work" is really three questions, because a remineralizing gum does three things at once. All three have research behind them, and they stack.
- It turns on your saliva. The body's own repair system, running at ten times its usual rate, exactly when you need it.
- It denies cavity bacteria their fuel. Xylitol is a sweetener Streptococcus mutans physically cannot ferment into acid.
- It supplies enamel mineral directly. Nano-hydroxyapatite is not a substitute for what your enamel is made of. It is what your enamel is made of.
Most oral care products do one of those. Toothpaste does the third, for two minutes, twice a day, at the times of day when no acid is present. A remineralizing gum does all three for twenty to thirty minutes at a stretch, two or three times a day, timed to the moment your teeth are under attack.
The saliva engine, and why the ADA endorses it
Saliva is the most underrated thing in your mouth. It is not just moisture — it is supersaturated with calcium and phosphate, which makes it the delivery vehicle for enamel repair. It also buffers acid, raising mouth pH back above 5.5, the point below which enamel starts dissolving.
Resting flow in a healthy adult runs about 0.3–0.4 mL per minute. Chewing pushes that to roughly 10 to 12 times resting rate. You are manufacturing your own defense on demand.
This is why the American Dental Association credits chewing sugar-free gum for 20 minutes after meals with helping prevent tooth decay. And the ADA's caries risk management guidance goes further than most people realise — it tells patients plainly to "chew sugar-free gum with xylitol," noting that xylitol promotes salivary flow and remineralization and cannot be metabolized by cavity-causing bacteria.
That is a professional body recommending this product category by name, on its own clinical page. There is no stronger institutional support available for any over-the-counter oral care habit short of brushing itself.
Xylitol: the sweetener cavity bacteria can't use
Cavities are not caused by sugar directly. They are caused by what bacteria do with sugar — ferment it into acid that dissolves enamel. Streptococcus mutans is the main offender.
Xylitol breaks that chain. It is a sugar alcohol that S. mutans takes up and then cannot metabolise. No fermentation, no acid. The bacterium wastes energy on a sugar it cannot use.
The effect shows up consistently in research. A 2025 review by Söderling and Pienihäkkinen in BMC Oral Health found xylitol gum lowered mutans streptococci levels in 12 of 14 studies examined. That is about as reproducible as results in this field get.
So every time you chew NanoChew you are doing two things simultaneously: raising the saliva that repairs enamel, and feeding the bacteria that attack it something they cannot turn into acid. Ordinary sugared gum does the opposite of the second one.
Nano-hydroxyapatite: the mineral your enamel is made of
This is what separates a remineralizing gum from a packet of mints.
Your enamel is about 96% mineral by weight, and that mineral is hydroxyapatite — a crystal lattice of calcium and phosphate. Acid pulls those ions out. Saliva puts them back. Nano-hydroxyapatite is that same material, milled to particle sizes small enough to settle into the microscopic surface defects where mineral has been lost. It is not an analog or a stand-in. It is the identical compound, supplied directly.
Japan recognized hydroxyapatite as an anti-cavity agent back in 1993, and it has been in widespread use there ever since. The recent clinical evidence is strong:
- It prevents cavities without fluoride. Pawinska and colleagues published a systematic review and meta-analysis in the Journal of Dentistry in 2024 and concluded, in their words: "more studies now show that hydroxyapatite is effective as an anti-caries active ingredient in the absence of fluoride." Early trials in that review reported 35–56% caries reduction in children using 5% hydroxyapatite toothpaste versus placebo.
- It matches fluoride head to head. A 2026 systematic review in Clinical, Cosmetic and Investigational Dentistry identified three separate trials where hydroxyapatite was non-inferior to fluoride toothpaste — in children over a year, in orthodontic adolescents over six months, and in adults over 18 months. All three were rated low risk of bias under the Cochrane RoB 2 tool, the standard instrument for exactly that judgment.
- It beats fluoride on white spots. The same 2024 meta-analysis found hydroxyapatite was more effective than fluoride for remineralizing white spot lesions after orthodontic treatment — the chalky marks braces leave behind.
- It rebuilds enamel mineral in early lesions. Najibfard and colleagues at UT Health San Antonio tested 5% and 10% nano-hydroxyapatite against a 1,100 ppm fluoride toothpaste in 30 adults. Both concentrations produced significant remineralization of early enamel lesions.
- It cuts sensitivity substantially. Limeback, Enax and Meyer pooled 44 trials in Biomimetics in 2023 and found hydroxyapatite reduced dentin hypersensitivity by roughly 40% versus placebo and 23% versus fluoride.
- It is safe. The EU's Scientific Committee on Consumer Safety, in its 2025 opinion, considered nano-hydroxyapatite safe at up to 29.5% in toothpaste and 10% in mouthwash, finding no mutagenic, cytotoxic or inflammatory effects in the particles assessed. Detail in is nano-hydroxyapatite safe?
Read that list again with one thing in mind: this is an ingredient that goes toe to toe with fluoride, the most studied preventive agent in dentistry, and wins on white spots and on sensitivity. We compare the two in full in hydroxyapatite vs fluoride.
The evidence, at a glance
| What it does | Evidence | The finding |
|---|---|---|
| Raises saliva, clears acid | ADA Oral Health Topics; ADA caries management guidance | Flow rises ~10–12×. ADA credits 20 min after meals with helping prevent decay, and tells patients to chew xylitol gum |
| Starves cavity bacteria | Söderling & Pienihäkkinen, BMC Oral Health 2025 | S. mutans lowered in 12 of 14 studies |
| Prevents cavities | Pawinska et al., J Dent 2024 meta-analysis | Effective without fluoride; 35–56% caries reduction vs placebo in children |
| Matches fluoride | Unterbrink et al., CCIDE 2026 | Non-inferior in 3 trials; all low risk of bias |
| Beats fluoride on white spots | Pawinska et al., J Dent 2024 | More effective for post-orthodontic remineralization |
| Rebuilds mineral in early lesions | Najibfard et al., 2011 (UT Health San Antonio) | Significant remineralization at 5% and 10%, in 30 adults |
| Reduces sensitivity | Limeback et al., Biomimetics 2023 — 44 trials | ~40% vs placebo, ~23% vs fluoride |
| Works in gum form | Porciani & Grandini, J Clin Dent 2014 | Double-blind, 107 people, hydroxyapatite chewing gum: significant sensitivity reduction |
Why gum beats toothpaste for this job
Here is the part the oral care industry has no incentive to tell you. Hydroxyapatite works by physical contact — it supplies mineral to a surface that has lost it. Which means the two variables that matter most are how long it is on your teeth and whether it is there when the acid is.
On both counts, gum wins outright.
| Toothpaste | NanoChew | |
|---|---|---|
| Contact time per use | ~2 minutes | 20–30 minutes |
| Contact time per day | ~4 minutes | 40–90 minutes |
| When you use it | Waking up and going to bed | Right after eating, when acid hits |
| Raises saliva flow | No | Yes, 10–12× |
| Needs a sink | Yes | No — desk, car, restaurant |
Ten to twenty times the enamel contact time of brushing, placed exactly where the acid is. That is not a marketing claim, it is a stopwatch.
And the format is clinically tested in its own right. Porciani and Grandini ran a double-blind study of 107 people on a hydroxyapatite-based chewing gum, published in the Journal of Clinical Dentistry, and found significant reduction in dentinal hypersensitivity. Hydroxyapatite delivered in gum reaches teeth and does measurable work.
Now do the arithmetic on a normal day. You brush four minutes. Meanwhile breakfast, coffee, lunch, an afternoon drink and dinner each drop your mouth below pH 5.5 for 20 to 60 minutes — well over two hours of active mineral loss. Four minutes of defense against two hours of attack. NanoChew is what goes in that gap.
What the ADA says about reversing early decay
This is the most important thing in this article and almost nobody knows it.
The American Dental Association's 2018 evidence-based clinical practice guideline on nonrestorative treatments for carious lesions states that non-cavitated lesions — early decay where the enamel surface has not yet broken — "have the potential to reverse by means of chemical interventions."
That is the ADA, in a clinical practice guideline, saying early decay can go backwards. Not slow down. Reverse.
What makes it go backwards is mineral arriving at the tooth surface while pH is above the dissolution threshold. That is exactly what saliva does, and exactly what nano-hydroxyapatite supplies. The ADA also describes a broad shift in dentistry away from "drill and fill" toward prevention and arrest, and states that whether decay progresses, arrests or reverses depends on "a balance between protective and pathogenic factors."
You are one of those factors. If a dentist has ever told you they want to "keep an eye on" a spot, that is them telling you the lesion has not cavitated and the outcome is still open. Chewing NanoChew two or three times a day after meals puts mineral on that tooth during the hours it is deciding which way to go. Full detail in can you reverse a cavity?
One honest boundary, because it is the line between useful and useless advice: once the surface has actually collapsed into a hole, that is structural loss and it needs a dentist. The window is the early stage — which is precisely why acting during it matters so much.
Who gets the most out of it
Everyone's enamel loses mineral after meals, so this helps broadly. But some situations benefit far more than others, and if you are in one of these the case is strong.
| If this is you | Why it matters more |
|---|---|
| Sensitive teeth | The best-evidenced benefit, and the only one tested in gum form. ~40% reduction vs placebo across 44 trials. Usually the first thing people notice. More → |
| Dry mouth | Double benefit — chewing restores the saliva you're short of, and the hydroxyapatite supplies the mineral your reduced saliva isn't delivering. More → |
| On a GLP-1 medication | Semaglutide and tirzepatide are associated with oral dryness, and reflux adds stomach acid. More → |
| In or just out of braces | Hydroxyapatite outperformed fluoride for remineralizing post-orthodontic white spot lesions. Ask your orthodontist about gum while appliances are on. |
| A heavy coffee or soda drinker | 93% of 380 US beverages tested fall below pH 4.0, and sipping stretches each exposure for hours. More → |
| A dentist is "watching" a spot | That means the lesion hasn't cavitated and the outcome is still open. More → |
| You already chew gum | The easiest upgrade available. Same habit, same effort — the only change is what the habit does for your teeth. |
How it compares to other remineralizing ingredients
Hydroxyapatite is not the only mineral agent on the market. Here is how the options actually stack up.
| Ingredient | How it works | Where it stands |
|---|---|---|
| Nano-hydroxyapatite | Supplies the identical mineral enamel is built from | Non-inferior to fluoride in 3 trials; beat it on white spots; strongest sensitivity data. Safe reviewed to 29.5% by the EU SCCS. No dietary restrictions. |
| CPP-ACP (Recaldent) | Milk protein complex carrying calcium and phosphate | Has gum studies, but the ADA's 2018 guideline suggests not using 10% CPP-ACP when fluoride, sealants or resin infiltration are available. Dairy-derived, so out with a milk allergy and not vegan. |
| Plain calcium carbonate | Calcium only, no phosphate structure | Supplies an ingredient but not the finished mineral. Useful as a supporting player, which is why NanoChew includes natural calcium alongside hydroxyapatite rather than instead of it. |
| Fluoride | Converts the surface to acid-resistant fluorapatite | Excellent in toothpaste, but barely exists as a chewing gum in the US because swallowed dose matters. Hydroxyapatite has no such constraint, which is why this format exists for it. |
That last row is the quiet advantage. Fluoride is superb at what it does, but dosing concerns mean you cannot practically chew it for ninety minutes a day. Hydroxyapatite you can — it is the mineral your teeth are made of.
What separates a good remineralizing gum from a bad one
"Remineralizing" is not a regulated term, so plenty of products print it without earning it. Six things actually matter.
| Check | What you want | NanoChew |
|---|---|---|
| Nano-hydroxyapatite present | The actual enamel mineral, not just a mint with calcium | Yes |
| Fully disclosed formula | Every ingredient named, no "proprietary blend" | Yes — all 10 listed |
| Xylitol as a real ingredient | Not a trace amount behind artificial sweeteners | Organic xylitol + erythritol |
| Correct chewing time on the label | 20–30 minutes, matching the research | 20–30 minutes |
| A base that lasts the window | Holds texture for 20+ min — you can't dose what you spat out at minute six | Organic chicle + mastic |
| Cost per piece, not per pack | Divide price by pieces. 60-piece pouches usually win | $0.50, or $0.45 on subscription |
That fourth row is the one that quietly decides whether a gum does anything. Several competitors tell you to chew "until the flavour fades," which is typically five to ten minutes — a fraction of the research window. A gum you chew for six minutes delivers a fraction of the benefit, no matter what is in it. See the full field in best remineralizing gum.
How to spot a brand overselling
The category has some genuinely sloppy marketing in it, and knowing the tells protects you.
- Claims the product "rebuilds enamel." Enamel has no living cells, so lost thickness does not grow back. Mineral absolutely can be rebuilt into a weakened surface — that is remineralization, and it is real — but a brand promising new enamel is telling you something biologically impossible.
- Citations that don't match the claim. The most common trick in this category is citing a sensitivity study to support a remineralization claim. The 44-trial hydroxyapatite meta-analysis is excellent evidence for sensitivity relief and is frequently misquoted as proof of enamel repair. Check what was actually measured.
- In vitro work described as clinical. "Studies show" sometimes means extracted teeth in a dish. Real science, weaker evidence. Look for the number of human participants.
- Studies cited secondhand. We have seen brands in this category reference a Journal of Dentistry review by crediting a competitor's blog post rather than the paper. If a reference has no journal, year and volume, treat it as decoration.
- Numbers that move around the page. A study dated 2023 in one paragraph and 2025 in another, or "six trials" that becomes "seven," means nobody checked.
Apply those to us too. Every study in this article is named with its journal, its year, its design and its participant count, and we have said which outcome each one measured.
What to pair it with
A remineralizing gum is a powerful addition to a routine, not a replacement for one. For the best result, pair it with:
- Brushing twice a day, with whatever toothpaste you prefer. NanoChew is additive — it works alongside fluoride or hydroxyapatite paste, and covers the hours neither one is in your mouth.
- Flossing or interdental brushes. Gum does not reach well between teeth, and that is where a lot of decay starts.
- Fewer acid episodes. Frequency matters more than quantity — six sweets across a day does far more damage than six at once. Same with drinks nursed over hours. See coffee and acidic drinks.
- Not brushing straight after acid. Softened enamel abrades. Wait about an hour — and chew gum during it, which speeds the pH recovery that makes brushing safe again.
- Regular check-ups. Your dentist is the only one who can tell you whether a spot has cavitated and whether a watched lesion is hardening up.
What to expect, and when
| Timeframe | What people notice |
|---|---|
| Day one | A cleaner, less dry mouth after meals, and fresher breath. That is the saliva, and it is immediate. |
| 1–2 weeks | Sensitivity starts easing. This is where hydroxyapatite trials begin reporting measurable improvement. |
| 1 month | The habit is automatic. Cold drinks and cold air are noticeably less of a problem for most people. |
| 3+ months | The timeframe over which enamel mineral support accumulates. Chew daily for at least this long for the full benefit. |
| Next check-up | Ask your dentist whether a watched spot feels harder on probing. That is how arrest is actually measured. |
Sensitivity is the one you can judge for yourself, which is why it tends to be the thing that convinces people.
Why NanoChew
NanoChew is a dentist-formulated nano-hydroxyapatite chewing gum with over 500 five-star reviews. The formula is deeper than anything else in the category, and every ingredient is there for a reason.
| Ingredient | Why it's in there |
|---|---|
| Nano-hydroxyapatite | The exact mineral enamel is built from, at a particle size that reaches microscopic surface defects. Matched fluoride for cavity prevention in clinical trials and beat it on white spots. |
| Organic xylitol | The ingredient the ADA names when it tells patients to chew sugar-free gum. Lowered S. mutans in 12 of 14 studies. |
| Organic erythritol | Second non-fermentable sweetener — real flavour, no acid production. |
| Propolis | A 2025 PROSPERO-registered meta-analysis of 7 randomized trials found propolis reduced plaque index. Most competitors don't include it. |
| Natural calcium + organic eggshell powder | Extra calcium alongside the hydroxyapatite — the same mineral logic as finishing a meal with cheese. |
| Organic chicle + mastic gum base | A natural base that actually lasts the full 20–30 minutes. Mastic has its own antiplaque data. |
| Coconut oil, bentonite clay, activated charcoal | Cleansing and texture. |
What you get for $29.99:
- Dentist formulated, with 500+ five-star reviews behind it.
- The deepest formula in the category. Nano-hydroxyapatite plus propolis, natural calcium, eggshell powder, mastic, bentonite clay and activated charcoal. Several direct competitors run hydroxyapatite and xylitol and stop there.
- Complete transparency. All ten ingredients published, no proprietary blends, nothing hidden.
- Best price per piece. 60 pieces for $29.99 is $0.50 each, or $0.45 on Subscribe & Save — among the lowest in the category, and a pouch lasts 20 to 30 days.
- Flavour and texture that last the window. The whole point is chewing for 20–30 minutes. A base that disintegrates early makes that impossible.
- Correct dosing guidance. 2–3 pieces a day, 20–30 minutes each, after meals — matching the research instead of "until the flavour fades."
Ingredient note: contains organic eggshell powder and propolis, a bee product. Not suitable if you have an egg or bee-product allergy. As with any xylitol product, keep away from dogs.
Close the gap in your routine. Shop NanoChew — $29.99 for 60 pieces, 10% off on Subscribe & Save →
The daily routine
| When | What |
|---|---|
| Morning | Brush as usual. |
| After breakfast | NanoChew, 20–30 minutes. |
| After lunch | NanoChew, 20–30 minutes. The window nothing else in your routine reaches. |
| After dinner | Third NanoChew — usually the day's biggest acid load. |
| Bedtime | Floss, brush, and don't rinse the toothpaste straight out. |
More on dose and timing in how much remineralizing gum per day.
Frequently asked questions
Does remineralizing gum actually work?
Yes. Chewing raises saliva flow to roughly 10–12 times resting rate, and the ADA credits 20 minutes of sugar-free gum after meals with helping prevent tooth decay — its caries management guidance tells patients to chew sugar-free gum with xylitol. Add nano-hydroxyapatite and you are supplying the exact mineral enamel is made of: a 2024 meta-analysis found it effective at preventing cavities without fluoride, three trials found it non-inferior to fluoride toothpaste, and it outperformed fluoride for white spot lesions. A double-blind trial of 107 people on a hydroxyapatite gum found significant sensitivity reduction.
Does it really remineralize teeth, or is that marketing?
It remineralizes. Enamel is 96% mineral and constantly exchanges calcium and phosphate with the fluid around it — acid pulls mineral out, saliva and hydroxyapatite put it back. Najibfard and colleagues at UT Health San Antonio measured this directly in 30 adults and found significant remineralization of early enamel lesions with both 5% and 10% nano-hydroxyapatite. The ADA's 2018 guideline likewise states early non-cavitated lesions have the potential to reverse through chemical intervention.
Is it better than regular sugar-free gum?
Considerably. Both raise saliva, which is genuinely valuable on its own. But regular gum then relies entirely on whatever calcium and phosphate your saliva happens to carry. NanoChew brings nano-hydroxyapatite with it, so you are not dependent on how hydrated you are — which matters most for anyone with dry mouth, a medication that causes it, or a long day on coffee instead of water. Full comparison in remineralizing gum vs regular gum.
How does hydroxyapatite compare to fluoride?
It holds its own and wins in places. Three clinical trials found it non-inferior to fluoride toothpaste, all rated low risk of bias. It outperformed fluoride for remineralizing white spot lesions after braces, and a 44-trial meta-analysis found it reduced sensitivity about 40% versus placebo and 23% versus fluoride. It is also the mineral your enamel is already made of, which is why it is described as biomimetic. Detail in hydroxyapatite vs fluoride.
Can I use it with fluoride toothpaste?
Yes, and that is a strong combination. There is no conflict, especially when they are separate products used at separate times — toothpaste at the sink, NanoChew after meals. You keep whatever you brush with and cover the hours it cannot reach.
How long and how often should I chew it?
20 to 30 minutes per piece, 2 to 3 pieces a day, right after meals. That is the window the research uses, and it is the single most common reason people get a weak result — a gum chewed for five minutes delivers a fraction of the benefit. Be wary of any label telling you to chew only until the flavour fades.
Does it help sensitive teeth?
This is often the first thing people notice. A meta-analysis of 44 trials found hydroxyapatite reduced dentin hypersensitivity by roughly 40% versus placebo and 23% versus fluoride, and the double-blind 107-person trial on a hydroxyapatite chewing gum found significant reduction too. Most people report improvement within one to four weeks. More in remineralizing gum for sensitive teeth.
Can it help reverse early decay?
The ADA's 2018 clinical practice guideline states that early non-cavitated lesions "have the potential to reverse by means of chemical interventions." What drives that is mineral reaching the tooth surface while pH is above the dissolution threshold — exactly what saliva does and exactly what nano-hydroxyapatite supplies. If your dentist is watching a spot, the outcome is still open, and chewing after meals puts mineral on that tooth during the hours it matters. Once a surface has broken into a hole, that is structural loss and needs a dentist.
Is nano-hydroxyapatite safe?
Yes. Japan recognized hydroxyapatite as an anti-cavity agent in 1993 and it has been in widespread use there for decades. The EU's Scientific Committee on Consumer Safety, in its 2025 opinion, considered nano-hydroxyapatite safe at up to 29.5% in toothpaste and 10% in mouthwash, finding no mutagenic, cytotoxic or inflammatory effects in the particles assessed. It is the mineral your teeth are already built from.
Can it replace brushing and flossing?
No — it is built to work alongside them. Gum does not reach well between teeth, which is where a lot of decay starts. Think of it as covering the 20 to 60 minutes after every meal, which is the part of the day your brush and floss were never going to reach.
How much does it cost to use daily?
At $0.45 a piece on Subscribe & Save, three pieces a day is about $41 a month — and for most people it replaces gum they already buy, so the real added cost is the gap between two gums. A single filling costs considerably more.
Which remineralizing gum should I buy?
Check six things: nano-hydroxyapatite actually in the formula, a fully disclosed ingredient list, real xylitol rather than a trace amount, chewing time guidance of 20–30 minutes, a gum base that lasts that long, and cost per piece rather than per pack. NanoChew is $0.50 a piece or $0.45 on subscription, with all ten ingredients published. The full field is compared in best remineralizing gum.
Where can I buy NanoChew?
At nanochewgum.com, where Subscribe & Save takes 10% off every pouch and brings it to about $0.45 a piece, and on Amazon. A 60-piece pouch is $29.99 and lasts 20 to 30 days.
Sources
- American Dental Association. Oral Health Topics: Caries Risk Assessment and Management. ada.org
- American Dental Association. Oral Health Topics: Chewing Gum. ada.org
- 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. Journal of the American Dental Association. 2018;149(10):837–849. doi:10.1016/j.adaj.2018.07.002. JADA
- Pawinska M, Paszynska E, Amaechi BT, Meyer F, Enax J, Limeback H. Clinical evidence of caries prevention by hydroxyapatite: an updated systematic review and meta-analysis. Journal of Dentistry. 2024;151:105429. doi:10.1016/j.jdent.2024.105429. UT Health San Antonio
- Unterbrink P, Schulze zur Wiesche E, Amaechi BT, Enax J. Fluoride-free toothpastes for caries prevention: a systematic review of clinical evidence on active ingredients. Clinical, Cosmetic and Investigational Dentistry. 2026;18:1–15. doi:10.2147/CCIDE.S586895. Dove Press
- Najibfard K, Ramalingam K, Chedjieu I, Amaechi BT. Remineralization of early caries by a nano-hydroxyapatite dentifrice. Journal of Clinical Dentistry. 2011;22(5):139–143. PubMed
- Paszynska E, et al. Caries-preventing effect of a hydroxyapatite toothpaste in adults: an 18-month double-blinded randomized clinical trial. Frontiers in Public Health. 2023;11:1199728. Frontiers in Public Health
- 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. MDPI Biomimetics
- Porciani PF, Grandini S. The effect of zinc hydroxyapatite-based chewing gum on dentinal hypersensitivity: a double-blind clinical study. Journal of Clinical Dentistry. 2014;25(2):32–36. PubMed
- Söderling E, Pienihäkkinen K. Effects of xylitol chewing gum on mutans streptococci: a review. BMC Oral Health. 2025;25:1275. BMC Oral Health
- Sycińska-Dziarnowska M, et al. Propolis in the management of plaque and gingival health: a systematic review and meta-analysis of randomized controlled trials. Journal of Functional Biomaterials. 2025;16(9):336. MDPI JFB
- Scientific Committee on Consumer Safety. Opinion on hydroxyapatite (nano), SCCS/1677/25. European Commission, 2025. European Commission
- Procter & Gamble DentalCare continuing education. Reduced demineralization and enhanced remineralization: critical pH of hydroxyapatite and fluorapatite. DentalCare.com
- American Dental Association. Oral Health Topics: Dietary acids and your teeth. ada.org
This article is for general information only and is not medical or dental advice. It has not been evaluated by the Food and Drug Administration, and NanoChew is not intended to diagnose, treat, cure or prevent any disease. Research findings described here refer to the specific products and formulations tested in those studies. If you have tooth pain, sensitivity or a visible hole in a tooth, see a dentist.