Electric brush heads: compatibility and cost per year

Oral Cove editorial deskUpdated September 2026Replace interval per ADA and NHS guidance; prices read from our own listings in September 2026
Short answer

Compatibility is settled by the model number, not the brand: find it on the handle and match the head family. For cost, the American Dental Association interval of three to four months means 3.3 to 4.3 heads per person per year, so a year costs that many heads multiplied by the pack price divided by the number of heads in the pack.

Two numbers decide everything here, and neither of them is on the front of the box. The first is the model code printed on your handle. The second is how many heads are actually inside the pack you are comparing.

On this page
  1. Compatibility, in one check
  2. How many heads a year
  3. The cost maths, worked
  4. Before you buy a cheaper head
  5. Questions people ask

Compatibility, in one check

Brush heads are not universal. A round oscillating head for an Oral-B handle will not click onto a Sonicare handle, and within one brand the connector changes between generations. Philips states this directly in its own support material: most Sonicare brushes use the standard click-on head, older Essence models take a larger screw-on head, and Philips One heads fit only Philips One handles.

  1. Find the model number on the handle. Philips tells users to look for a code such as HX123A on the bottom of the toothbrush.
  2. Match the connector type first: click-on, screw-on, or a proprietary collar. A listing that names a series but not your connector is only half an answer.
  3. Compare your exact model against the seller list. If your code is not named, treat a claim of "series universal" as the seller claim it is rather than a specification.
  4. Buy one pack, fit it, and check the bristle contact before ordering a year of supply. A wrong-fit pack is the most common way to waste money on heads.
Handle family What to check Example listing on this store
Philips Sonicare HX3, HX6, HX9 series Click-on connector, and whether the listing names your code (HX6730, HX3216, HX6530 and similar) Philips-compatible head (Brushmate), listed at $2.90
Oral-B and Braun round heads Round oscillating head on a push-fit shaft; names models such as D12, D16 or 3757 Oral-B compatible head (Brushtide), listed at $2.90
usmile (Y1, Y4, Y5, Y10, P10, P20) Same brand, several generations, so the collar differs between models usmile compatible heads (Smileleaf), listed at $21.90
Laifen Check whether the listing covers your exact model rather than the brand as a whole Laifen compatible heads (Cleanleaf), listed at $15.90
Xiaomi Mijia (T200, T200C, T300, T500) The head code matters: MES601, MES602 and MES606 are not interchangeable across every handle Mijia T200/T200C compatible head (Tuftwell MES606), listed at $2.90
We cannot confirm fit for youWe sell these heads, we do not make them, and this store stocks compatible heads for more than a dozen handle families. The model number on your handle plus the compatibility list on the listing is the only reliable check. If a listing does not name your model, message us before buying rather than after.

How many heads a year

The replacement interval is not a marketing number. The ADA advises replacing a toothbrush or brush head every three to four months, or sooner if the bristles are matted or frayed, and notes that effectiveness falls as bristles wear. UK NHS patient leaflets usually say about every three months. Here is what that works out to:

You replace each head every Heads per person per year In practice
8 weeks 6.5 Needed if you brush hard, if the bristles splay early, or if two people rotate the same head, which we do not recommend
10 weeks 5.2 A middle ground some people settle on with softer bristle heads
12 weeks (3 months) 4.3 The end of the interval most UK guidance names
16 weeks (4 months) 3.3 The other end of the ADA range
Whenever the bristles look worn Not predictable The honest method, and the one that keeps the cost estimate uncertain

A second person on the same handle does not share a head. The ADA states that toothbrushes should not be shared, because it exchanges body fluids and microorganisms between people. Budget one head per person per interval.

The cost maths, worked

Cost per year is one division and one multiplication: the pack price divided by the heads in the pack gives the price of one head, and the heads per person per year multiplied by that gives the annual cost. Worked out for a household of three sharing one handle, at $12 for a four-pack, replacing every 12 weeks:

$3.00per head, from a $12 four-pack
4.3heads per person per year at 12 weeks
$13per person per year
$48for the household per year, buying 4 packs

Note what happens in the last two figures. Three people need 13 heads, and packs of four do not divide neatly by 13, so you buy 16 heads and finish the year with three spare. Pack size is where the waste sits, which is why the brush head cost calculator asks for the pack count rather than the whole-mouth price you see on the product image.

Water flosser nozzles have the same arithmetic with a different part: they last longer than heads but still wear. Our setup guide covers pressure and tip choice before you stock up on spares.

Before you buy a cheaper head

  1. Connector and collar. A head that clicks is not necessarily a head that seals or seats at the right angle.
  2. Soft, end-rounded bristles. The ADA Seal requirements for manual toothbrushes include bristles free of sharp or jagged edges, and the ADA recommends soft bristles to reduce the risk of gum injury.
  3. Pack count. Compare price per head, never pack price.
  4. Chip features. Some handles read a chip in the head for replacement reminders or automatic mode selection. If a reminder matters to you, check whether the compatible head includes it.
  5. Returns. Confirm the seller accepts a return on an opened pack before you buy four of them.
The honest gap in the evidenceWe looked for a clinical trial comparing third-party compatible heads with original manufacturer heads on plaque or gum outcomes, and could not find one. So we will not claim the cheaper head performs like the original, and no seller can, because the comparison has not been done. What is checkable is the fit, the bristle condition and whether the listing names your model. What is not checkable is long-term performance.

Related

Questions people ask

How often should I change an electric toothbrush head?
The American Dental Association advises every three to four months, or sooner if the bristles look matted or frayed. UK NHS patient leaflets often say about every three months. That works out at roughly three to four heads per person per year.
Can a family share one electric toothbrush base?
They can share the handle if each person has their own head, but the ADA is clear that toothbrushes should not be shared, because it exchanges body fluids and microorganisms between people. Practically, you also have to keep track of whose head is whose, and the calculator below counts one head per person per interval.
Are cheap compatible brush heads as good as the originals?
We cannot answer that honestly, and we sell the compatible ones. We could not find a clinical trial that compares third-party heads with original heads on plaque or gum outcomes. What you can check objectively: the connector, whether the bristles are soft and end-rounded, and whether the listing names your exact handle model.
Do all Philips Sonicare heads fit all Sonicare handles?
No. Philips support states that most Sonicare brushes use the standard click-on heads, that older Essence models take a larger screw-on head, and that Philips One heads only fit Philips One handles. Find the model number on the bottom of the handle and check it against the head listing.
What does a year of brush heads actually cost?
Heads per person per year, multiplied by the price of one head. A four-pack at $12 works out at $3 a head, and four heads a year is about $13 per person. The calculator on this page does the full sum including pack sizes and everyone sharing the base.

Sources

  1. American Dental Association. Toothbrushes: replace every three to four months, worn bristles reduce effectiveness, and do not share toothbrushes — www.ada.org/resources/ada-library/oral-health-topics/toothbrushes
  2. Philips support. Which brush head fits my Sonicare toothbrush (click-on, screw-on and Philips One head families) — www.usa.philips.com/c-f/XC000006597/which-brush-head-fits-my-sonicare-toothbrush
  3. NHS. How to keep your teeth clean: brushing twice daily for about two minutes with 1,350 ppm fluoride toothpaste or above — www.nhs.uk/live-well/healthy-teeth-and-gums/how-to-keep-your-teeth-clean/
  4. NHS Kent Community Health. Brushing your teeth: change your toothbrush every three months when possible — www.kentcht.nhs.uk/leaflet/brushing-your-teeth/
  5. Yaacob M, Worthington HV, Deacon SA, et al. Powered versus manual toothbrushing for oral health. Cochrane Database of Systematic Reviews 2014: moderate certainty of an 11% plaque reduction at one to three months and 21% at over three months for powered brushes — www.cochrane.org/evidence/CD002281_poweredelectric-toothbrushes-compared-manual-toothbrushes-maintaining-oral-health
  6. American Dental Association. ADA Seal of Acceptance requirements for manual toothbrushes, including end-rounded bristles — www.ada.org/resources/research/science/ada-seal-of-acceptance

Replacement heads and nozzles

Compatible heads listed by handle family, with the pack contents and price per head shown on each listing.

See replacement heads

Which one to buy

Every option this store stocks, with price, type and who it suits, is compared on one page.

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