Philips Sonicare

Series 7900 Advanced Whitening Sonic electric toothbrush with app (HX9631/17)

Philips Sonicare Series 7900 Advanced Whitening Sonic electric toothbrush with app (HX9631/17)

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Overall

#96 in

Electric Toothbrushes

according to Reddit Icon Reddit

Sentiment score60% positive
3
1
1
Last updated: May 20, 2026

Reddit Reviews

Reddit Iconm-Oeck
12 months ago

Philips Sonicare 7900 Much prefer it to the Oral B it replaced, got it for half the normal price in black Friday sales

Reddit Iconyachting_mishaps
12 months ago

I have a Philips Sonicare 7900, got it with a significant discount online, it’s excellent. Battery lasts weeks. Had a previous version years ago which was great too and just wore it out. In between I got an oral-b on a dentist’s recommendation which I stopped using after a month, terrible battery and needed loads of cleaning below the brush head because of a hollow casing, whereas the Philips needs a lot less attention.

Reddit IconSheCaughtFiRE-
3 months ago

I'm going against the grain to say Sonicare. I have both brushes. The design of the IO brush head has a small hole under the bristles where spit and toothpaste accumulates. Despite taking my brush head off and rinsing after every use, it quickly molds on the inside. It could be that I live in a humid environment (indoors usually 40%), but the mold is so gross. If you don't remove and clean it after every use it can mold even quicker. I love the feeling of the IO brush otherwise, but am sticking with Sonicare for everyday use.

Reddit Iconanonbumblebee
3 months ago

Every sonicard that I've bought has broken down within 2 years. They are good but definitely not BIFL.

Reddit Icontestthrowawayzz
12 months ago

No need to spend that much for either one of them. I see a $80 one for oral b and $130 one for philips sonicare online. All you need is the pressure sensor. No need to pay more for the bluetooth function that’s worthless.

Reddit Iconthe_real_snurre
9 months ago

My Sonicare with travel case (with integrated charger) is by far the best electric toothbrush I have ever used. Came here to say this.

9 months ago

Not bulky, no. And the built in charger is a blessing.

Reddit IconFresh-Computer-6994
2 months ago

I will not deinfluence you. Mas okay ang Philips Electric Toothbrush Sonic series. There are some published studies na better ang mentioned brand na yun. Dentists also agree when it comes sa clean function and bristles shape.

Reddit IconAnomuumi
2 months ago

Another Sonicare user here. My teeth are definitely cleaner since I switched from a rotary brush to this. I know it's anecdotal evidence, but I can feel the difference every day.

2 months ago

I'm mostly moving it and not applying a lot of pressure. I think in the user guide it said to use a ~45 degree angle, but I need to check. I have a higher-end Sonicare, but afaik it's the same speed of 62k brush movements/min as the one in the picture. It could be that my rotary brush was shit, but it did have a new brush. I definitely feel that my teeth are better brushed and stay also cleaner longer when I started brushing with Sonicare.

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