Oral-B iO Series 9
Exact average 85.2 · 7 printed, 4 estimated · printed scores only: 86
Image: Oral-B9 of 11 reviewers recommend the iO Series 9 for thorough cleaning, long battery life and a pressure sensor that actually helps. Critics balk at the price of the brush and its replacement heads.
Reviewed by TechGearLab, TechRadar, The Independent and 8 more
The catch: Expensive brush and replacement heads.
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What 11 critics said
Highest score first · all converted to 0–100- 98TechGearLab
Tests found it cleans extremely well, is comfortable and has excellent battery life, and the reviewer fully recommends it.
Read TechGearLab review - 90TechRadar
The reviewer calls it among the best electric toothbrushes you can buy, with a thorough, quiet clean and genuinely useful feedback.
Read TechRadar review - 90The Independent
Delivers a robust yet gentle clean with accurate AI tracking and seven modes.
Read The Independent review - 85Electric Teeth
A great-cleaning, tech-packed toothbrush that is the best Oral-B has, but expensive and only worth it for committed users, with imperfect tracking.
Read Electric Teeth review - 80Digital Trends
The reviewer calls it the best-cleaning toothbrush he has used and says yes to buying it.
Read Digital Trends review - 80Tech Advisor
Excellent brushing performance and good feedback, but the reviewer says you can get the same iO cleaning for less.
Read Tech Advisor review - 80T3
The reviewer finds the iO9 an excellent cleaner with attractive design, but the launch price is hard to justify and the tooth-tracking still does not work.
Read T3 review - 85est.Expert Reviews
The guide picks the iO9 as the best premium Oral-B and says it gives the best clean in the range, with fast charging and a charging travel case.
Read Expert Reviews review - 83est.Trusted Reviews
The best-performing electric toothbrush the reviewer has tested, quiet and powerful with a useful display.
Read Trusted Reviews review - 83est.Good Housekeeping
Chosen as best smart toothbrush after lab and consumer testing, scoring well on cleaning, sensors and battery, with testers enthusiastic.
Read Good Housekeeping review - 83est.CNN Underscored
Named best smart toothbrush for its useful feedback, seven modes and accurate coaching app, and the tester keeps using it.
Read CNN Underscored review
"Est." means the outlet printed no score, so we estimated one from its verdict and checked our estimates against ratings outlets print. How we check estimates
What critics praise most
What critics dislike most
Other electric toothbrushes critics rate highly
Common questions
Is the Oral-B iO Series 9 worth it?
Most critics think so: 9 of 11 recommend it. Expensive brush and replacement heads.
Do critics agree about the Oral-B iO Series 9?
Broad agreement: scores range from 80 (Digital Trends) to 98 (TechGearLab), a spread of 18 points across 11 reviews. Most reviewers land fairly close together.
What do critics dislike about the Oral-B iO Series 9?
Price (10 of 11 reviews), Battery life (4 of 11 reviews).
What is the best alternative to the Oral-B iO Series 9?
The Philips Sonicare ProtectiveClean 6100 (critic score 84), mid-price sonicare.