Oral-B

iO Series 4 Electric Toothbrush

Oral-B iO Series 4 Electric Toothbrush

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Overall

#19 in

Electric Toothbrushes

according to Reddit Icon Reddit

Sentiment score55% positive
12
3
7

Top Pros

Top Cons

Last updated: Aug 9, 2026

Reddit Reviews

Reddit IconMrobbo1984
6 months ago

100% bought iO4 - and it basically went all mouldy regardless of how well I cleaned it. Using a normal toothbrush until I can find a replacement and it might be that Suri is the answer.

Reddit Iconpeakmeme
4 months ago

Dentist here, I only recommend an oscillating head (oral b) and not sonic (Colgate/phillips), studies consistently show they remove more plaque. I can’t find the exact video but they looked at non-oscillating heads in ultra slow motion and the movement at the tip of the bristle (where it counts) was essentially nil. The other important factor is a pressure sensor. Along the gum line it’s more common to see toothbrush abrasion lesions and gum recession than actual decay. From my experience people over brush the surfaces you see when you smile, and they under floss the in-between areas. Pro tip: grab an interdental brush (Pikster or TePe) because no matter how good the tooth brush it’s only ever going to clean 3 out of the 5 surfaces of a tooth.

4 months ago

I honestly prefer the older style Oral B Pro series (700/800/1500/4000) but the newer iO series seem okay too. iO3 as a minimum, iO9 if you want to connect it to smartphone, not sure why you’d want to. I use an Oral B Pro 700, a manual toothbrush when I’m travelling, and piksters. I have an iO4 that a rep gave me that’s waiting for the Pro series to die, although I’m not sure it ever will. The other-side of the equation is diet of course, if you have a diet full of fibrous, low GI foods, and don’t smoke, you can afford to be a little bit slack in the hygiene department from time to time.

4 months ago

Oh god that’s a hard one, I’d like to see myself as a ‘think outside the box’ kind of person, because the mainstream is boring! However, when it comes to alternative theories on health it gets real crazy real quick, e.g. egg shells cure teeth decay, the baby stripped all the nutrients from my teeth, my wisdom teeth made my teeth crowded etc. The 1/10 in me tries to look at the patient holistically, what’s right for one person might not be for the next, but the 9/10 recognises that most decisions and advice should be based on some form scientific proof.

Reddit IconPerioqueen
3 months ago

RDH in field 15 years. Oral b is far less abrasive. I see a lot of recession and abrasion with the sonicare

4 months ago

The up range is FANTASTIC. Worth the $50-60 price point from my RDH standpoint

Reddit Iconstickyjam
9 months ago

>but it’s just a toothbrush. Noticeably better motor on the io, I've an io4 I paid 70 for and the difference compared to my basic Colgate electric was mad felt like I'd let my teeth down! 

Reddit Iconvestnidok
12 months ago

Рекомендую oral-b лінійку io.  Це відносно нова лінійка, але є мінус, що змінні насадки на цю серію трохи дорожчі. Сам користуюсь io 3, дуже задоволений. Раніше була теж oral-b, але минулого покоління, здається pro 2500. Вона прослугувала 5 років з 20 року, і ось цього літа замінив її на io 3, бо вже перестав тримати заряд акумулятор. Лінійка io трохи дорожча за ваш бюджет. Але якщо вирішите брати з цієї лінійки, то можно брати модель io 3, бо в дорожчих, починаючи з io 4, там нема відмінностей, окрім того що з'являються можливість підключення до телефону. Є ще io 2, але ця модель дещо урізана по потужності. Також можна брати і минулі лінійки, думаю теж не розчаруєтесь, он моя pro 2500 п'ять років прослугувала.

Reddit IconAznricecooker
7 months ago

I bought the $159 one when it was on sale. I'm not a big fan of it because there is a gap between the base of the head part and the handle. It allows the toothpaste water to leak out after use and dries up on the handle. It seems like it was made for you to remove the head and clean it after every use, which is a pain

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