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Oral-B iO Series 9 Electric Toothbrush with 3 Replacement Brush Heads, Black Onyx
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Brand | Oral-B |
Color | Blackonyx |
Size | 1 Count (Pack of 1) |
Material | Nylon |
Age Range (Description) | Adult |
About this item
- COMPATIBLE ONLY WITH ORAL-B iO REFILL HEADS
- You Will Receive 1 Oral-B iO Series 9 Black Onyx electric toothbrush, 3 Oral-B iO Ultimate Clean replacement brush heads, and a powerful charging travel case
- PERFECT PRESSURE: Signals red when brushing too hard and green when brushing just right
- PERSONALIZED BRUSHING: Display screen helps motivate you and enables you to customize your brushing experience
- SENSATIONAL CLEAN: Redesigned dentist-inspired round brush head with twisted bristles reach every contour for a deep clean
- LIVE COACHING with VISIBLE TIMER: A.I. tracks where you are brushing and guides you to 100% coverage so you don't miss any zone, while the visible timer ensures you brush for the dentist-recommended 2 minutes
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From the manufacturer
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SensationaliO technology combines Oral-B's unique round brush head with the gentle cleaning energy of micro-vibrating bristles. |
PersonalizationDelivers a uniquely personalized clean with 7 Smart Modes. |
Gum ProtectionSmart Pressure Sensor displays a red light when brush too hard and green when brushing just right. |
Product Description
The Oral B io series rechargeable toothbrush combines powerful, but gentle micro-vibrations with Oral B unique dentist-inspired round brush head design for a professional clean feeling every day. The smart pressure sensor helps to keep you from brushing too hard to protect your gums and enamel. 3D teeth tracking and AI recognition use an interactive color display to help guide you to your best clean for all areas of the mouth. A 2-minute quadrant timer comes built-in that pulsates every 30 seconds, ensuring a complete clean. The frictionless, smooth magnetic drive system transfers energy to the bristle tips for a clean that wows. Replace your Oral B io series replacement brush heads every 3 months For best results.
Product details
- Product Dimensions : 7.01 x 3.94 x 9.96 inches; 1.39 Pounds
- Item model number : iO M9.4B2.2A
- Batteries : 1 Lithium Ion batteries required. (included)
- UPC : 069055128909
- Manufacturer : AmazonUs/PRFZ7
- ASIN : B088CK6XJ4
- Country of Origin : USA
- Best Sellers Rank: #10,080 in Health & Household (See Top 100 in Health & Household)
- Customer Reviews:
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Customer Rating | 4.6 out of 5 stars (4682) | 4.6 out of 5 stars (927) | 4.7 out of 5 stars (1136) | 4.7 out of 5 stars (1415) | 4.7 out of 5 stars (426) | 4.8 out of 5 stars (1973) |
Price | $299.94$299.94 | $119.97$119.97 | $299.94$299.94 | $205.00$205.00 | $116.00$116.00 | $156.49$156.49 |
Sold By | Amazon.com | Amazon.com | Amazon.com | North To South | dollar-a-day | Better Deals and More (SN Recorded) |
Age Range Description | Adult | Adult | Adult | Adult | Adult | Adult |
Brand Name | Oral-B | Oral-B | Oral-B | Oral-B | Oral-B | Oral-B |
Color | Blackonyx | Black | Rosequartz | Violetametrine | Grayopal | Blackonyx |
Item Firmness Description | Soft | — | Soft | — | — | — |
Material | Nylon | — | Nylon | — | Nylon | Nylon |
Number of Pieces | 4 | 1 | 3 | — | 1 | 1 |
Size | 1 Count (Pack of 1) | 3 Piece Set | 6 Piece Set | — | 3 Piece Set | 4 Piece Set |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
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Reviewed in the United States on December 20, 2022
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Top reviews from the United States
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The most I've spent on an electric toothbrush in the past was around $180 for the Sonicare Diamondclean. It lasted me for many years, so if you break down the price over years, it wasn't all that expensive on an annual basis. Besides, we have spent that much going out to dinner at a really nice restaurant (that's how I typically justify the price of more "costly" items)!
The Sonicare recently started acting up with it's brushing performance and the power button was getting hard to press, so I decided to replace it. I was satisfied with it's performance over the years, but wanted to try a round brush head this time and Oral B is the leader in that category.
There are so many options with Oral B so I had to do a lot of research, starting at the top, of course. I was skeptical about the hefty price tag for the IO9, so I didn't immediately opt for the best of the best. I read many reviews and watched several videos for the IO, Genius, and Pro lines before finally deciding to just bite the bullet and go for it!
The main feature I wanted with the IO9 that the others don't have is the 3D AI tracking. I have been getting really lazy with my brushing - walking around the house doing other things and really not paying attention to how effectively or how long I was brushing each area of my mouth. Yes, my Sonicare had a quadrant timer, but it didn't track how much time and effort was spent on all the zones. The IO9 tracks every surface of your teeth - inside, outside, chewing, left, right, front center and front bottom. It gives you a visual display on your phone as you're brushing so you know exactly when to move to the next area. It is taking me a little longer than normal - around 3 minutes (including tongue) to effectively brush everywhere, but that's okay, it's what I needed. I read some reviews and watched some videos that said the brush couldn't determine where it was in your mouth and I have not found that to be the case. My guess is that it partially learns your brushing habits to improve the tracking. I always brush in the same order, left to right, top to bottom, so it hasn't had any issues with accurately determining where the brush is in my mouth.
I also like the pressure sensor that turns red when you're brushing too hard or your chosen color when not brushing hard enough. I didn't realize I was brushing harder than I should until I bought this toothbrush. The tongue cleaning mode is also useful as it's set for 30 seconds. I wasn't brushing nearly 30 seconds before this toothbrush.
In summary, this is the best toothbrush I've ever used. Here are the pros and cons in my opinion:
Pros:
- Excellent, powerful cleaning backed by ADA approval
- 3D tracking of all tooth surfaces with the app for a thorough clean
- Tongue cleaning mode with set time
- Larger brush head covers more area
- Quiet
- Fast charging
- Sleek and attractive appearance and small footprint
- Magnetic base that charges fast
Cons:
- Price
- The brush head is a little large. I have a smaller mouth and it fits, but some might find it a little uncomfortable
- My biggest gripe is that two people can't use the app unless you either use the same cell phone or constantly pair and unpair the base with each of your phones
- The travel case only holds one brush and it doesn't use a USB charger like every other travel device
POSITIVES:
+ Does a great job of cleaning your teeth and gums
+ Replaceable heads for multiple user use
+ Long run time
+ Can get wet (use in shower even)
+ Well developed interactive ap via Bluetooth, surprisingly sophisticated
+ Wireless charging thru base.
+ Lots of feedback to coach you
+ Name brand should deliver good customer support
NEGITIVES:
- It is slightly inconvenient for multiple users using it that are in Bluetooth range at the same time
- Expensive, it is a little too expensive for a single user
- Not sure the firmware in this is upgradable. (The ap most like is)
CONCLUSIONS:
This is a solidly made electric toothbrush that is well designed and well thought out with good components. The price is just too high in my opinion for a toothbrush for a single user and a little tricky for multiple users. I do love it though, and if the price is not an issue for you, you should get this, it is probably the best toothbrush made. I give it 4 stars because of price and multiple user issues. RECOMMENDED.
This is my honest opinion of this product, if this was useful to you, please click the “Helpful” button below. Thank you for reading this review

Reviewed in the United States 🇺🇸 on December 20, 2022
POSITIVES:
+ Does a great job of cleaning your teeth and gums
+ Replaceable heads for multiple user use
+ Long run time
+ Can get wet (use in shower even)
+ Well developed interactive ap via Bluetooth, surprisingly sophisticated
+ Wireless charging thru base.
+ Lots of feedback to coach you
+ Name brand should deliver good customer support
NEGITIVES:
- It is slightly inconvenient for multiple users using it that are in Bluetooth range at the same time
- Expensive, it is a little too expensive for a single user
- Not sure the firmware in this is upgradable. (The ap most like is)
CONCLUSIONS:
This is a solidly made electric toothbrush that is well designed and well thought out with good components. The price is just too high in my opinion for a toothbrush for a single user and a little tricky for multiple users. I do love it though, and if the price is not an issue for you, you should get this, it is probably the best toothbrush made. I give it 4 stars because of price and multiple user issues. RECOMMENDED.
This is my honest opinion of this product, if this was useful to you, please click the “Helpful” button below. Thank you for reading this review



Top reviews from other countries


I’ve always preferred the round Oral-B brush head as I feel I get more complete tooth coverage with the smaller head which you use on one tooth at a time and get into spaces easier. I have a soniccare as well but the larger brush head overlaps teeth and doesn’t reach into the spaces as easily not to mention is more cumbersome to try and brush behind your front teeth with. The Oral-B being a round head with a circular motion allows you to hold it vertically to get behind the front teeth easier without changing the brush motion/direction.
This io series maintains the round brush head style like previous oral-b electric brushes but upgrades it further with a faster (soniccare-like) movement speed. It feels like a hybrid of the 2 brushes. Like soniccare it seem to agitate the toothpaste more and push it between the teeth (also splatters a little more than other oral-B’s). The cleaning quality seems as good or better as other oral-b electrics but is a smoother and more gentle feeling experience on your teeth and gums while brushing.
The pressure sensor is a nice upgrade as well which not only shows you when you are pressing too hard like my previous brush did, but it also shows you when you are using the correct amount of pressure as well.
The noise level of the toothbrush and it’s new drive system is indeed significantly more quiet than any other electric I have tried.
You can select your brush mode before turning the brush on (my previous oral-b) could not do this.
The charging base is also a nice upgrade and much faster than any other electric toothbrush I’m aware of, needing only a few hours for a full charge.
The 3D tooth tracking is a neat feature and it does seem to detect which area of your mouth your are brushing with decent accuracy but with some issues as well.
As for the cons:
The 3D tracking via the app monitors where/how you’re brushing and gamifies it by awarding a score at the end. The problem is that it does not seem at all possible to achieve 100% coverage within the recommended 2 minute brushing time. In many attempts I have never been able to get 100% in less than 3 and a half to 4 minutes which is way too long for standard brushing and can cause excess wear on teeth and gums. The app even pops up a warning at 4 minutes saying you’re brushing too long. I don’t think their algorithms are very accurate for this process. While there is still some benefit to see which locations you’re brushing too hard on, etc I don’t think the feature reaches its potential with enough accuracy.
The colour screen is nice but doesn’t really add a ton to the experience over black and white or even the older oral-b models. There is a timer but you can’t see it while brushing. There is a more accurate battery display but you can only see it when the brush is put on the charging base…you can’t check it manually when holding the handle. Aside from that the settings have little icons but that doesn’t tell you what they are any better than the lit up words/icons of previous models. The colour screen is a promoted feature in the top models but it is a pretty limited advantage.
The brush head options are limited. There are only 2 head options for the io compared to the many options the standard oral-b’s offer and the io heads are a lot more expensive.
The included travel/charging case is pretty poor quality for their flagship model. It feels very cheap and plasticy inside and out and just uses a cheap, folded plastic hinge which obviously isn’t great for longevity. My previous oral-b case was a lot more significant with better build quality and materials. This is not what you would expect from a premium $300 brush.
Battery life doesn’t seem much improved over previous brushes. A single brushing can use 5% to 10% or so depending on the setting and time. I would estimate that in a best case scenario where you aren’t using the intensive setting and keep brush times to 2 minutes max, you could get about 20 brushings (10 days) out of a full charge.
Other models are pictured with a brush holder/case but this model does not include it which seems odd considering the io9 is currently the flagship of their lineup.
Overall I do think the brush and its performance is great as is the charge stand/time. That being said you get all that with the io7 for less money. The extra price premium for the io9 gets you a colour screen, a couple extra brush settings, the 3d tracking feature and a charging case. Is that worth the price difference?…for me probably not but when you factor in the additional number of brushes you get with the io9 combined with its sale price then it seems more reasonable which is why I went with io9 myself.

Ok, the brush is still somewhat new. I’m coming from a Philips and I have to pick apart the charging case. My 5 year old Philips Sonicare came with a super nice case.
This new IO series 9 that boasts it has a charging case is definitely disappointing (as I understand it, that’s the difference between this and the IO 8…..plus one more brushing mode). This case literally is made from what toy packaging is made from. It feels equally cheap and the hinge is the plastic style that bends and usually breaks after prolonged usage.
The case probably costs less than a dollar to make and it has put an awful taste in my mouth (more figuratively than literally at this point) about this oral care package.
I can’t see me sticking with OralB if this is how they manufacture a $400 (Canadian) electronic toothbrush package.

1) I brushed my teeth maybe 3-4 times a week for 30seconds to a minute. I didn't know 2 minutes, morning and night was the standard for oral health. I can say this toothbrush with the Oral B app has kept me accountable, and I had followed a perfect schedule since my first use about 3 weeks ago.
2) The AI isn't perfect, but it's incredibly helpful and cool. The AI helps identify which areas of your mouth haven't been cleaned when brushing. It makes the toothbrushing experience satisfying and rewarding. In a few years, the AI will probably be near perfect.
3) The pressure sensor is a great feature too. I didn't know that too much pressure can be dangerous. The sensor on the toothbrush helps determine the perfect brushing force.
Also, mini-goals help keep things exciting and novel.
My only subtle complaint is that this toothbrush is expensive. I paid about $400.00 CDN when you factor in HST, which is incredibly costly for a toothbrush. However, I can't complain because I've already noticed a significant improvement in my oral, and you can't put a price on oral health.
I would recommend this toothbrush to anyone who has accountability issues with toothbrushing and is looking to invest in their oral health significantly.



Reviewed in Mexico 🇲🇽 on March 30, 2021

