Philips Sonicare

FlexCare+ HX6921/02

Philips Sonicare FlexCare+ HX6921/02

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Overall

#219 in

Electric Toothbrushes

according to Reddit Icon Reddit

Sentiment score25% positive
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Last updated: Jun 30, 2026

Reddit Reviews

Reddit IconServileLupus
8 months ago

I love my sonicare. I went for the diamondclean back in 2022 and its still working fine. I don't really use the smart features, if those are important for you then I would get it. I mainly wanted the nice glass cup charging thing. Lets you have a cup for rising and have it be your charging base instead of one of the tiny obnoxious ones that likes to get knocked over. The pressure sensor is amazing, both have that but what I found was super helpful and not something I thought would be is the timer for when to brush where. The previous sonicare series 2 I used had 4 brushing zones. The 6 on the diamond clean seems to help a ton with making sure I brush properly. Partitions brushing time into 6 smaller sections 3 for top and 3 for bottom. I gifted my sister one (Flexcare+ which is discontinued) as well back in 2017 and hers just died a few months back if you wanted an idea on lifespan

Reddit Icondx30
4 months ago

for EDS, the main things i'd focus on are a super soft bristle toothbrush (like the colgate extra soft or sensodyne pronamel soft), since a lot of us have gum sensitivity and fragile tissue that gets irritated easily. an electric toothbrush like an oral-B or sonicare on a sensitive setting can also be a game changer because you don't have to press as hard, which helps avoid bruising or micro-tears. for toothpaste, sensodyne is a pretty popular choice in this community because it's gentle and helps with sensitivity. biotene is another good one if you deal with dry mouth, which is pretty common with EDS and dysautonomia overlap. also worth mentioning since a lot of us deal with POTS or general dysautonomia alongside EDS, staying on top of electrolytes actually makes a real difference in how your whole body feels, including things like dry mouth and fatigue that can affect oral health. i've been using salties, which are just unflavored electrolyte drops, and they're easy to add to any drink without messing with your routine. but back to the actual dental stuff, definitely check with your dentist about fluoride treatments if you have enamel issues, and ask about a custom mouthguard if you're a jaw clencher since hypermobility can make TMJ stuff way worse.

Reddit IconMule_Wagon_777
3 months ago

The Phillips Sonicare with the gum setting and heads turned my hygienist's frown upside-down. I'm not kidding, she went from scolding and lecturing to boasting about my excellent hygiene. As all my teeth are crowned I'm just brushing around and around my gumline for two minutes.

Reddit IconLaughDailyFeelBetter
3 months ago

Costco regularly has good deals on Sonicare sets and brush replacements. At least twice a year you can get a 2 pack for $75 or so. So worth it!!

Reddit IconIntimatepunch
6 months ago

Suri. Built to last, cheap, quiet, ergonomic, and with a 40+ day battery life. Outlasted my multiple SoniCares which kept breaking, and still going strong today.

Reddit IconAggressive_Bus293
7 months ago

I actually disagree with the other comment and prefer the oral B. I have both and I’ve been using the sonicaire for about a month now. They both are great but oral B feels more gentle. The sonicaire is pretty intense and since it’s larger I think there is slightly more potential to incorrectly clean the gums, causing damage.

7 months ago

Yeah it’s definitely a personal preference thing! I can understand why some people prefer the usual brush head of the sonicaire because it feels more familiar.

6 months ago

Yeah why does my oral B get moldy and my sonicaire doesn’t? Also an RDH. 😂

8 months ago

I prefer Oral B to my Sonicaire. Look up BASS brushing technique on YouTube but also there are videos how to specifically brush with an electric because you do not need to use a scrubbing motion.

4 months ago

I prefer the oral B iO. Oral B brush head is better in general when used properly imo especially in the back. The only thing I do prefer about the sonicaire is they don’t get that mold issue that oral B has not figured out yet. I just have to frequently remove and clean out the brush head area on the oral B.

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