Oral-B iO Series 9
CNET and ElectricTeeth praise it as the flagship iO model that adds a larger battery, more modes and a larger display than the Series 7.
Consolidated from 19 cited sources across 16 outlets
Where the cited sources landed, as we read them
- 13 positive sources
- 1 mixed source
1 of 10 research runs entered this as a product to avoid rather than a pick. A trap is a product buyers genuinely cross-shop but should not buy, ranked honestly alongside the real picks rather than dropped to the bottom. Why the boards include them
Pros & cons
- ✓ Largest battery
- ✓ More modes
- ✓ Large display
- ✓ Dual-motion cleaning for thorough plaque removal
- ✓ AI-guided pressure sensor for optimal brushing pressure
- ✗ Color display, app dependency and magnetic charging case mean simply more to break
- ✗ Priciest consumables in the category
- ✗ Maximizes both failure surface and lifetime ownership cost
The sources behind this ranking
We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.
Evidence 6 articles and 13 video reviews
13 positive sources
Moneycontrol Shaurya Shubham · reviewer · Dec 2025 Oral-B iO Series 9 blends connected brushing, pressure sensing, and refined hardware into a premium electric toothbrush that focuses on daily usability, guided cleaning habits, and consistent oral care results.Read E
ExamineDental ExamineDental · 6K subscribers · Sept 2021 This smart electric toothbrush is a huge leap in electric toothbrush technology - watch to find out more!Watch T
TRF Product Reviews TRF Product Reviews · 5.9K subscribers · Jan 2024 For a smarter, more effective clean, consider upgrading to this innovative toothbrush.Watch C
Comparative Reviews Comparative Reviews · 4.8K subscribers · Dec 2025 Discover the Oral-B iO Series 9 Black Onyx electric toothbrush, a cutting-edge oral care device that offers a professional clean feeling thanks to its dentist-inspired round brush head and gentle micro-vibrations. Designed with your dental health in mind, the Smart Pressure Sensor helps protect your gums and enamel by preventing excessive pressure while brushing.Watch D
DuC DuC · 4.3K subscribers · Nov 2024 This toothbrush is ahead of the competition. Can't say but only good things about it and it may help save you trip to your dentist or hygienist at least once every six months.Watch D
DuC DuC · 4.3K subscribers · Nov 2024 This toothbrush is ahead of the competition. Can't say but only good things about it and it may help save you trip to your dentist or hygienist at least once every six months.Watch W
Wunschgetreu - Reviews Made in Germany Wunschgetreu - Reviews Made in Germany · 4.2K subscribers · Apr 2024 The iO Series 9 from Oral-B stood out in our review primarily due to its magnetic drive, which provides a comfortable brushing experience, its short charging time and the 3D tooth tracking via the Oral-B app. Watch the video to find out whether the electric toothbrush also scored in terms of cleaning performance!Watch R
Review Amazon Review Amazon · 3.7K subscribers · Apr 2025 The Oral Bio Series 9 is incredibly smart and effective, offering personalized feedback with the AI coaching system and a long-asting battery. It's good for up to 2 weeks on a full charge. Plus, it's great for families as it offers multiple brushing modes to suit different needs like sensitive teeth or whitening. On the downside, the OralB IO Series 9 is on the expensive side.Watch B
Beautyistic Beautyistic · 1.8K subscribers · Apr 2025 We’ll take you through all the features that set the Oral-B iO Series 9 apart, including its groundbreaking A.I. position detection, seven distinct cleaning modes, and its ability to remove 100% more plaque in just one week compared to a manual brush.Watch O
ONLINE TESTS AND REVIEWS ONLINE TESTS AND REVIEWS · 320 subscribers · Apr 2024 This revolutionary toothbrush is designed to take your brushing experience to the next level, providing you with a deep, comprehensive clean that will leave your teeth feeling refreshed and your smile beaming with confidence.Watch G
Genuine Tech Genuine Tech · 201 subscribers · May 2026 This brush, the Oral-B iO Series 9, changes the baseline for what we expect from a daily dental tool. I've spent months testing oral hygiene gadgets, and most of them just promise results they can't deliver. I'm not sponsored by any of these companies. I bought this purely out of curiosity. Honestly, the problem isn't just that we brush too lightly.Watch B
Buybestz Buybestz · 10 subscribers · Sept 2024 The Oral-B iO Series 9 Electric Toothbrush is a game-changer! This toothbrush removes up to 100% more plaque in just one week, making your gums twice as healthy.Watch W
WorldViews Reviews Universal WorldViews Reviews Universal · 4 subscribers · Jul 2024 Discover why the Oral-B iO Series 9 is the choice for dental care enthusiasts.Watch
1 mixed source
5 stance not read sources
Economic Times Dhruv Mohan · reviewer · Jun 2026 The Oral-B iO Series 9 is the company's most feature-packed electric toothbrush , combining a magnetic drive motor, colour display, Bluetooth connectivity, and AI-powered brushing analysis . On paper, it sounds like the kind of product designed more for CES show floors than real bathrooms.Read B
Beautyistic Beautyistic · 1.8K subscribers · Apr 2025 In today’s review, we’re taking an in-depth look at the Oral-B iO Series 9 Electric Toothbrush with 3 Replacement Brush Heads in Rose Quartz. If you’re ready to level up your oral care routine with cutting-edge technology, this review will give you everything you need to know about this premium toothbrush. From its advanced features like A.I.Watch W
Wirecutter Article Read C 
CNET Article Read E 
Electric Teeth Article Read Frequently asked questions
It ranks #6 of 20 on our electric toothbrushes tier list, in B tier. That placement draws on 19 cited sources across 16 outlets.
None of the 14 sources with a clear view is critical of it. Color display, app dependency and magnetic charging case mean simply more to break. Priciest consumables in the category. Maximizes both failure surface and lifetime ownership cost.
On our electric toothbrushes board, Oral-B iO Series 9 ranks #6 (B tier) ahead of Oral-B iO Series 7 at #14 (D tier). Oral-B iO Series 7: ElectricTeeth and Health.com note it as the next-step iO model with a larger battery and more modes than the Series 5.
On our electric toothbrushes board, Oral-B iO Series 9 ranks #6 (B tier) ahead of Philips Sonicare DiamondClean Smart 9500 at #15 (D tier). Philips Sonicare DiamondClean Smart 9500: Wired and TechRadar list it as the best electric toothbrush for healthier teeth and gums, with a premium design and smart features.
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D tier #11 4 of 9 research runs entered this as a product to avoid rather than a pick.