Oral-B iO vs Sonicare 9900 Prestige

⚠Since recording this video, the iO Series 10 has been launched. Despite being the most capable iO model to date, we still recommend the iO9 over and above the 10. The iO Series 10 isn't worth the premium currently asked. The 9900 is still our top overall choice for the reasons given.

Clear, detailed and concise explanatIon. I wish other YouTube comparison videos were this good. 👍

On the Sonicare 9900 Prestige there are two buttons. One visible, de on/off button and an invisible and that is the intensity setting. On the three small led lights, below the on/off button, you can press to set the intensity

Didn't notice it mentioned in the Adaptive intensity chapter. The Sonicare app also allows you to define "problematic" areas (e.g. inflamed gums) in your mouth and IIRC the brush will adapt the intensity / pressure sensitivity when getting there.

One thing I’ve noticed is the oral B makes the toothpaste turn into liquid very quickly and just runs down the stem. The sonic care froths the toothpaste and is much easier to brush without spitting during the 2-3 min. I used manual for the longest time and that’s how I’ve always brushed otherwise with the oral just feels like you’re wasting most of the tooth paste.

Very informative video covering all important aspects of those two toothbrushes! Helped me a lot to decide which one to get!

Jon there is one other thing worth mentioning - and I don't know whether you have picked up on it. When you take the brush head off the oral B iO series, it is no longer a simple metallic pin (like with older models). It is now this chunky plastic thing which has all sorts of nooks and crannies, which after a while starts to stink as it collects a lot of gunk. Not easy to clean other and oral B dont even talk about how to clean this new head adapter (and would probably void the warranty!!!). But the sonicare still uses the simple and slim metallic pin, which is not a receptacle for nasty gunk and therefore, more hygenic in my opinion. What are your thoughts?

I love my Oral-B iO because of the circular motion, and so far my battery has lasted more than two weeks without charging 👍🏼👍🏼!

When going over the colors the middle IO brush, is it a series 8 by chance? Here in the US that series has a violet option exclusive to that series. It looks like the middle brush and then series 9 has the rose quartz which is a lighter metallic pink color.

Thank you for the detailed comparison @Electric Teeth! I have a question though. In your "Taking care of your teeth..." video, the dentist says sonicare toothbrush needs to be rotated while moving. Was that the case with the other sonicare models but not this one?

This video is so useful! Thank you very much.

Thanks for this review! I’m a long term Sonicare toothbrush user (16+ years) and switch on and off with an extra soft Oral b manual toothbrush. I have receding gums from years of over brushing when I didn’t know better and sensitive teeth due to grinding. I bought an Oral b io series 9 when my Sonicare failed and even on the extra sensitive setting using gentle care brush heads the toothbrush was too powerful for me and caused me soreness and pain. It did an excellent job at cleaning, better than any toothbrush I’ve experienced but my teeth and gums couldn’t handle it. I really wanted to keep it but just couldn’t. I just purchased the Sonicare 9900 and I’m very happy with it with no pain or soreness. I completely agree with the reviewer in saying that one isn’t better than the better. They operate differently and depending on the user’s needs may or may not be the right fit.

I feel Oral B have over priced these I/O brushes and to only include 1 brush head when they provide a dual brush head case inside the box makes absolutely no sense. They should have included 2 brush heads as standard at this price point!

USB-C on the Prestige 9900 sold me

The fact that you need the phone app to change basic settings in the prestige is just a no for me. I want to be able to change the basic settings on the brush itself I’m not have to be locked into getting the app and everything associated with it.

Great review. Thank you. I have top and bottom permanent retainers. Which one would you recommend?

I used to have the Sonicare Diamondclean but they kept breaking. After 3 new ones I have up and decided to go for the Oral-B IO9 instead. For me personally it was a big mistake. Something that really bothers me is the size of the brush head. It is so thick that I find it a lot more difficult to brush the teeth at the back of my mouth. You don’t happen to know if there are any brush heads available for the Oral-B that is more similar to the Sonicare compact brush heads?

Hey Jon... what personally is your go-to toothbrush over these last few months? Is it one of these 2? (Research for Electric Teeth reviews aside.)

I tried both i prefer the IO 9 feels like a better clean, magnetic mechanism vs physical for the part that makes the brush movement, buttons are well covered on the Oral B so no paste gets gunked in, charging stand easier to clean. I did like sonic cares case and brush guards tho.

Hi there sir. Great comparison, do you know an oscillating toothbrush that has a long battery life? Like 3 weeks at least. If not, do you know an oscillating toothbrush that stays at the same power regardless of power? Infact this is more important. My sonic fairy will toothbrush feels just as powerful at 100% as 10%. But I get a better clean from oscillating toothbrushes. My oral b one was great but only for a week where it became weaker. It was older tho, do new oral b ones stay as strong even on lower battery? If they do could you tell me which please?