Reference · Toothpaste actives
Toothpaste active
comparator
Enter the fluoride ppm from a label, choose its named salt, and compare hydroxyapatite, xylitol and potassium nitrate with plain evidence notes. The tool explains ingredients. It does not diagnose a tooth problem.
Before you start
An active ingredient label cannot diagnose sensitivity, decay, a crack or gum disease. A dentist should assess persistent, worsening, one-tooth or lingering pain before you rely on a toothpaste change.
Step 1 · Read the label
Choose the actives you see
The ppm field is a label transcription. It is not a threshold or a recommendation. Select only the other actives printed on the product you are reading.
Your result
Active ingredient notes
What this means
Read what the evidence says about supplements for tooth enamelThis is not a diagnosis. If sensitivity persists, one tooth hurts, pain lingers after a trigger, or you have swelling or pain when biting, see a dentist.
How this toothpaste active comparator works
This tool separates what is printed on a toothpaste label from what an ingredient study says. You enter a fluoride ppm value if the tube lists fluoride, choose the named fluoride salt, and select any other actives that appear on the label. The result then shows a short note about what that ingredient is used for, the evidence category used on this page, and the type of person or question for which the comparison may be useful.
The tool does not create a product score. It does not add points for more ingredients, convert an evidence category into a rank, or decide which tube belongs in a bathroom. A toothpaste may contain several actives, but each active has its own delivery form, concentration, contact time, formulation and evidence base.
Fluoride ppm is a label number
Parts per million, or ppm, is the concentration field printed on many fluoride toothpaste labels. This calculator only repeats the number you enter. It does not set a minimum, maximum or target. If the label is hard to read, leave the field blank until you can check the tube or box. A number copied from an advertisement may not describe the same product or formulation.
The ADA describes fluoride-containing compounds as anticaries agents used in toothpaste. Its toothpaste topic names sodium fluoride, sodium monofluorophosphate and stannous fluoride among the compounds used for this purpose. This page focuses on sodium fluoride and stannous fluoride because they are the two salt choices in the requested tool. The label name still matters because the full formula may contain other ingredients and claims.
Sodium fluoride and stannous fluoride
Sodium fluoride and stannous fluoride are different fluoride salts. Both can appear in toothpaste, and both are listed by the ADA in its discussion of anticaries compounds. The comparator keeps the salt name visible rather than treating all fluoride labels as identical. It also avoids turning the salt choice into a verdict because a product is more than one active ingredient.
Stannous fluoride products may carry additional label language about sensitivity, plaque or gum care, but those statements belong to the product formulation and the evidence submitted for that product. Sodium fluoride labels can also be part of different formulations. Read the actual active-ingredient panel and follow the product directions. If a dentist has given you a specific plan, that plan is more relevant than a generic comparison card.
Hydroxyapatite
Hydroxyapatite is a calcium phosphate mineral used in some fluoride-free toothpaste formulations. Research has tested particular hydroxyapatite products for outcomes such as early lesion progression or remineralization. A 2025 systematic review and meta-analysis indexed in PubMed compared fluoride-free hydroxyapatite products with conventional fluoride toothpaste in selected studies and described the evidence as dependent on the tested products and outcomes.
That source boundary matters. The word hydroxyapatite does not show the particle size, concentration, carrier, brushing protocol or study population. It also does not tell you whether a product is the right choice for your caries history. If you are considering a switch away from fluoride, discuss it with a dentist, especially when you have a history of frequent decay or a treatment plan that depends on fluoride.
Xylitol
Xylitol is a sugar alcohol used in some toothpaste, chewing gum and lozenge products. The delivery form changes the question. Chewing gum holds xylitol in the mouth and also changes saliva flow. Toothpaste is brushed and then rinsed or spit out. A study of one format cannot be copied to every other format without checking the method.
The Cochrane review linked in the sources examines xylitol products and dental caries. This page uses a cautious evidence category for xylitol in toothpaste because the ingredient name alone does not establish the amount, contact time or outcome. The comparator keeps fluoride separate so xylitol is not mistaken for the main anticaries active in a label comparison.
Potassium nitrate
Potassium nitrate is a desensitizing active used in some sensitivity toothpastes. Sensitivity is a symptom with several possible dental sources. A toothpaste label can tell you that potassium nitrate is present, but it cannot tell you whether the symptom comes from exposed dentin, a crack, decay, gum recession, wear, a restoration or another cause.
ADA summarizes evidence for self-applied dentifrices that contain potassium and other desensitizing ingredients. The evidence category on this page is therefore about a desensitizing role in some toothpaste studies, not a promise that every potassium nitrate product will resolve every symptom. If pain persists or stays in one tooth, see a dentist rather than repeatedly changing products.
How the evidence categories are used
The cards use words such as established, formulation-dependent and limited to show the strength and scope of the source material. They are not formal grades and they are not a numeric scale. Established anticaries evidence for fluoride means that fluoride toothpaste has a strong place in cavity prevention guidance. It does not mean every toothpaste with any fluoride label is identical.
Formulation-dependent means that the result depends on more than the ingredient name. Limited means the evidence is narrower, mixed or less direct for the exact format being compared. These labels are a reading aid. They do not replace a systematic review, an ADA source page, advice from a dentist, or the current product label.
Who should use the result
The tool is useful when you have a tube in hand and want to understand the active-ingredient panel. It can help you distinguish fluoride ppm from a salt name, and a desensitizing ingredient from a general flavor or sweetener. It can also give you source links to read before asking a dentist a focused question.
It is not a substitute for an examination. See a dentist for persistent sensitivity, spontaneous pain, pain that lingers, pain on biting, swelling, a broken tooth or a symptom that affects sleep. A dentist can check the tooth and gum, consider imaging, and decide whether a toothpaste change is enough or whether another step is needed.
How to compare two labels carefully
First, copy the active ingredients exactly. Second, record the ppm next to the fluoride salt instead of writing only fluoride. Third, note whether hydroxyapatite, xylitol or potassium nitrate is actually listed. Fourth, check the rest of the label for directions and warnings. Fifth, compare products only after keeping the delivery form and concentration in view.
Do not compare a study product with a commercial tube by ingredient name alone. A study may use a different concentration, a different abrasive base, a different brushing time or a different population. The page makes those limits visible so the result does not look more certain than the source material.
Frequently asked questions
What does the fluoride ppm field do?
It displays the number you read from the toothpaste label. The calculator does not create a recommended ppm, set a cutoff, or decide whether the product is suitable.
Are sodium fluoride and stannous fluoride interchangeable?
They are different fluoride salts that can appear in toothpaste. The ADA lists both among anticaries compounds, but product formulations and additional label claims can differ. Compare the actual tube and ask a dentist if you need help choosing.
Does hydroxyapatite have the same evidence as fluoride in every product?
No. Hydroxyapatite studies test particular products and formulations. A systematic review can inform the ingredient category, but the ingredient name alone does not establish the evidence for every toothpaste.
Can xylitol replace fluoride toothpaste?
This page does not make that substitution. Xylitol evidence depends on the form and use pattern, and the Cochrane review does not turn toothpaste xylitol into a general replacement for fluoride.
Can potassium nitrate explain why one tooth hurts?
No. It is a toothpaste active used for sensitivity, but a product label cannot identify a crack, decay, gum recession, wear or another cause. See a dentist for persistent, worsening, one-tooth or lingering pain.