(checked 2026-10-10)
The cheapest way into Oral-B's quieter, gentler iO motor, with a visible pressure light. It locks you into pricier iO-only heads, and it has the highest share of 1-star Amazon ratings among the big-brand picks here.
Top complaints
- Stops working after about 6 months
Amazon's review summary says many customers report the brush stopping after 6 months of use, with battery life and durability both getting mixed reviews. 10% of Amazon ratings are 1-star.
- iO-only heads cost more
Standard Oral-B heads don't fit iO models. Wirecutter found iO heads at about $7 each in an eight-pack and up to $15 each, more than double standard heads. Electric Teeth lists this as a con.
Source: Wirecutter, Electric Teeth - Unlabeled modes, mold-prone gap, slow charging
Electric Teeth notes there are no mode labels or icons, a full charge takes up to 16 hours, and the gap at the head and neck can trap bacteria and grow mold. Wirecutter says some customer reviewers clean that iO junction daily.
Source: Electric Teeth, Wirecutter
What owners love
- Quieter and gentler than older Oral-Bs
Electric Teeth measured a maximum of 64 dB, versus 73 dB for the Pro 1000, and found the iO action gentler and less aggressive.
Source: Electric Teeth - Easy-to-read pressure light
Amazon shoppers like its ease of use, and one notes that the pressure light makes good technique simple. Electric Teeth describes white, green and red light states.
- Cleans like a dentist visit
Amazon shoppers call it the best in its class for cleaning, and Electric Teeth says it cleans well.
- You want the cheapest heads
- You're bothered by gunk building up where the head meets the handle
- You want labeled modes
- Oral-B fans who want a quieter, gentler brush
- Learning not to press too hard (light-ring pressure sensor)
- About 2.5 weeks per charge
Scores (tap for why)
What experts say
- Electric Teeth: 4.7/5: cleans well, sleek and quiet; cons are unlabeled modes and pricier iO-only heads. Battery lasted 18-20 days.
- Wirecutter (NYT): Covers the iO line as a group: it calls the iO Series 6 the best upgrade but notes iO heads cost more than double standard heads and some testers found iO heads more drooly.