TechGearLab98
The Oral-B iO Series 9 is a top-tier electric toothbrush that delivers exceptional cleaning performance and useful smart features.
Oral-B iO Series 9
9 expert reviews#1 in electric toothbrushesChecked 1 Nov 2026
Quick answer
The Oral-B iO Series 9 has a critic score of 85 out of 100 from 9 professional reviews, and 9 of them recommend it. It ranks #1 of 3 electric toothbrushes we score. Critics praise its performance and picture quality. The most common complaint is price.
Reviews checked 1 Nov 2026
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Our verdict
All 9 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.
The catch: Expensive brush and replacement heads.
Critic agreement: High
Scores run from 79 to 98
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What do critics say about the Oral-B iO Series 9?
TechRadar90
The Oral-B iO Series 9 is an exceptionally effective electric toothbrush that provides helpful real-time feedback and a superior cleaning experience.
The Independent90
The Oral-B iO9 provides a highly effective and gentle cleaning experience, with advanced AI tracking that genuinely helps improve brushing habits, though the app-dependent features may not appeal to everyone.
Expert Reviews85est.
The iO Series 9 is considered the best premium electric toothbrush available, offering a superior cleaning experience through its magnetic drive system and advanced smart tracking features.
CNN Underscored85est.
The Oral-B iO Series 9 is a highly effective smart toothbrush that provides excellent feedback and customization, though its high price point makes it a significant investment.
Digital Trends80
The Oral-B iO Series 9 offers industry-leading cleaning performance and a premium build, though its high price and poor battery life are notable drawbacks.
Tech Advisor80
The Oral-B iO Series 9 offers excellent cleaning performance and useful smart features, but its high price and mediocre battery life make it difficult to justify when cheaper models in the same line provide similar core results.
T380
The Oral-B iO9 offers exceptional cleaning performance and a premium design, but it is hampered by a prohibitively high retail price, ineffective AI tracking features, and a design that is difficult to keep clean.
Good Housekeeping79est.
The Oral-B iO Series 9 is a solid, high-tech electric toothbrush that offers advanced features like AI coaching and multiple cleaning modes, though it is slightly outperformed by the top-tier Sonicare models.
Scores are converted to 0–100. "est." means the outlet gave no number, so we estimated one from its verdict. How we score
What critics praise most
Performance7 of 9
Picture quality2 of 9
What critics dislike most
Price8 of 9
Battery life3 of 9
Alternatives
Not sure about the Oral-B iO Series 9?
Common questions
Is the Oral-B iO Series 9 worth it?
Most critics think so: 9 of 9 recommend it. Expensive brush and replacement heads.
What do critics dislike about the Oral-B iO Series 9?
Price (8 of 9 reviews), Battery life (3 of 9 reviews).
What is the best alternative to the Oral-B iO Series 9?
The Philips Sonicare 4100 (critic score 83), best value.