Question 1

Do these replacement heads fit all Oral-B iO models (3 through 10)?**

Accepted Answer

Yes, these 12-piece heads are specifically designed for the Oral-B iO series, including models 3, 4, 5, 6, 7, 8, 9, and 10. However, some users on Reddit have noted the fit can be slightly looser than genuine heads—if you feel any wobble, simply press firmly until you hear a click. For a perfect snug fit, you may want to rotate the head 180° and try again.

Question 2

Are the medium bristles too harsh for sensitive teeth or gums?**

Accepted Answer

Many buyers with normal gums find these medium bristles perfectly comfortable. That said, TikTok reviewers with sensitive gums have reported they feel firmer than expected, similar to a standard medium toothbrush. If you have gum sensitivity or receding gums, we'd recommend sticking with soft-bristle OEM heads or trying a gentler compatible brand. These are best suited for general daily cleaning, not for delicate mouths.

Question 3

How long does one head last, and do the bristles wear out quickly?**

Accepted Answer

In most cases, each head lasts about 3–4 weeks with twice-daily brushing—slightly shorter than the 4–6 week lifespan of genuine Oral-B heads, based on user feedback. A few customers on YouTube noted faster fraying around week three. We suggest replacing them as soon as you notice the bristles spreading outward or losing their shape, which is common for all brush heads. The value is still strong at roughly $1 per head.

Question 4

What if the heads don't fit my toothbrush or I'm not satisfied?**

Accepted Answer

While we can't speak for every seller, most listings for these heads offer a 30-day return policy or satisfaction guarantee. If you experience any issues like loose fit or defective heads, contact the seller directly through the platform you purchased from. Buyers have reported good luck with refunds for individual defective heads, though a few noted it's best to check the seller's return policy before ordering.

Question 5

Are these as good as the original Oral-B iO heads, or should I buy OEM instead?**

Accepted Answer

That depends on your priority. If you want to save 50–70% and don't mind replacing heads a bit more often, these are a solid budget-friendly alternative. Many users on TikTok and Reddit say they clean just as effectively for the first few weeks. However, if you have very sensitive gums, want guaranteed perfect fit, or prefer longer-lasting bristles, the genuine Oral-B iO heads are still the top choice. Think of these as a great value option for everyday use, not a 1:1 replacement for pros or perfectionists.

12PCS Replacement Heads Compatible with Oral B iO 3 4 5 6 7 8 9 10 Series Electric Toothbrush,Toothbrush Heads Compatible with Braun Oral B iO Replacement Heads with Medium Bristles

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