Impressive cleaning comes at a price, which for the Oral-B iO Series 9 means having to fork over $300. I want a smart toothbrush that can learn my precise brushing habits and guide me toward practical improvements, I don’t want to brush to chase after a score. This isn’t an isolated problem, but rather, a common one shared by most products in this category. It doesn’t paint a true picture of my brushing and habits. For example, I can spend a lot of time brushing the front side of my teeth, while neglecting the back, but it treats the two sides as one. However, the tracking feature isn’t available with unguided brushes, which is rather puzzling for something “smart.” At the end of each brush, I’m given a score from zero to 100 to indicate my brushing performance.Įven though it’s able to tell me how well I’m brushing each quadrant, a part of me craves for more precise brushing data. ![]() The Oral-B iO 9 tracks a total of six zones when being guided using the app, so I can see exactly how well I’m brushing each area. So far, the majority of smart toothbrushes I’ve encountered don’t differ too much with their smart functions. So yeah, it’s going to require frequent charges. ![]() Not surprisingly, it’s a battery hog, eating away about 10% of its battery after each use. John Velasco / Digital TrendsĪfter each brush, it’ll display how much battery is left. It doesn’t entirely get rid of hard-to-remove plaque buildup in between teeth, but to be frank, I haven’t come across a toothbrush that can do this well. I feel like my teeth receive a buffing job, in addition to a power wash - so it leaves my teeth with a squeaky feel every time. Thanks to its intense micro-vibrations, the Oral-B iO Series 9 delivers the best brushing performance I’ve experienced. Additionally, a distinctive vibration tells you when it’s time to move onto another quadrant. The Oral-B app will do the same thing, but I prefer the visual of the light, even if I’m brushing with my smartphone in hand. An LED ring around the toothbrush lights up in red, blue, or green, to indicate if it’s too much, too little, or just right. Part of its top-notch performance is due to its ability to detect how much pressure I’m applying while brushing my teeth. In fact, it’s the best toothbrush I’ve ever used, including the Hum by Colgate that I checked out right before this one. ![]() The iO Series 9 is a totally different beast altogether. In using one of Oral-B’s entry-level electric toothbrushes in the past, I was never convinced that it was any better at cleaning than Philips’ Sonicare line. To be blunt, I’m enamored with how well this toothbrush cleans my teeth. John Velasco / Digital Trends Pearly white clean Oral-B has put in a lot of work behind the brushing mechanism, which consists of a frictionless, smooth magnetic drive system to produce powerful micro-vibrations as you brush (more on that later). ![]() A tiny screen showcases battery life, brushing modes, and even an emoji face after each brush to grade my performance. It’s plastic, but significantly beefier in size than other brushes, with the weight and solid feel to match. While it may look like just another electric toothbrush from a cursory inspection, it’s undeniably fancier looking up close, and equipped with tech that makes it a step above the rest. I’ve owned several manual and electric toothbrushes, but the iO Series 9 is the first I would call downright imposing.
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