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Long-term melatonin use linked to 90% higher heart failure risk

https://www.sciencedaily.com/releases/2026/08/260829035228.htm
1•elo2000•55s ago•0 comments

A Simple Guide to Five Normal Forms in Relational Database Theory (1982)

https://www.bkent.net/Doc/simple5.htm
2•dargscisyhp•4m ago•0 comments

Squeak 6.1 Release Party UKSTUG, Sep 2nd 18:00 UTC

https://www.meetup.com/ukstug/events/316112369/
1•LinqLover•6m ago•0 comments

Bugs happen: The easy way to compare solo PQ to ECC+PQ

https://blog.cr.yp.to/20260704-bugs.html
1•zdw•8m ago•0 comments

Racial Views of Winston Churchill

https://en.wikipedia.org/wiki/Racial_views_of_Winston_Churchill
2•vinni2•9m ago•0 comments

The AI That Won't Say Who Made It (Unmasking Ox Alpha) [video]

https://www.youtube.com/watch?v=dLTNVM1mhiU
1•emk_709•10m ago•0 comments

Why CephFS commits writes faster than Ceph RBD on the same cluster

https://zozoo.io/aether-shared-filesystem-faster-than-block-storage/
1•zozotk•11m ago•0 comments

Apple Maps Renames Lake Ontario 'Lake America'

https://www.macrumors.com/2026/09/01/apple-maps-lake-america/
3•spdustin•14m ago•2 comments

SKILL.state: Scalable Long-Horizon Agent Skills

https://arxiv.org/abs/2608.26263
1•Hoefner•14m ago•0 comments

Fun weekend project – brand distribution game

https://keepitlive.lol
1•seif-dx•16m ago•1 comments

Fluorescent lamps (don't) have ears

https://blog.coredump.cx/p/fluorescent-lamps-dont-have-ears
2•zdw•17m ago•0 comments

OpenAI to Restrict Astra Model After Rating It 'Critical' Cyber Risk

https://www.wsj.com/tech/ai/openai-to-restrict-astra-model-after-rating-it-critical-cyber-risk-49...
2•bmau5•18m ago•2 comments

Why your agent is better than mine

https://yakko.dev/blog/best-harness-is-your-own-harness
2•yakkomajuri•18m ago•0 comments

Show HN: Fountain – OSS API to give your app a computer it can talk to

https://managoat.com/oss-launch
1•jhgaylor•19m ago•0 comments

failfs

https://docs.kernel.org/filesystems/failfs.html
3•manbash•20m ago•0 comments

Show HN: Compilr.dev Studio – A project brain AI agents write to and people read

https://studio.compilr.dev/welcome/
1•scozzola•20m ago•1 comments

Small Is Beautiful

https://blog.dshr.org/2026/09/small-is-beautiful.html
2•zdw•21m ago•0 comments

Surfmen of the U.S. Life-Saving Service

https://www.nps.gov/calo/learn/historyculture/surfmen.htm
2•Bluestein•22m ago•0 comments

Meta's $17B Settlement Is a Bad Deal for Teens and All Social Media Users

https://www.eff.org/deeplinks/2026/09/metas-17-billion-settlement-bad-deal-teens-and-all-social-m...
3•panarky•24m ago•1 comments

Modernist Tiles with CSS Grid

https://www.carmenansio.com/articles/modernist-tiles-css-grid/
2•eustoria•25m ago•0 comments

I've Been Reading

https://antonyfb.com/blog/reading-straw-world.html
1•jruohonen•27m ago•0 comments

JavaScript / ECMAScript Internationalization (I18n)

https://www.jsi18n.com/
1•eustoria•28m ago•0 comments

Making my blog feel like other people are here

https://keith.is/post/playhtml-shared-header/
1•eustoria•29m ago•0 comments

Claude Fable 5.1 results on ARC-AGI

https://arcprize.org/results/anthropic-claude-fable-5-1
3•matt1•30m ago•3 comments

Aurem – ships real commits to your website from plain English, no coder needed

https://auremcto.com/
2•tjsandhu•31m ago•0 comments

A docs page is a long and complex search query to find AI agents

https://blog.val.town/aeo
3•stevekrouse•31m ago•0 comments

Pgwatch v6: dashboards reimagined, and a reaper that doesn't choke

https://www.cybertec-postgresql.com/en/pgwatch-v6-dashboards-reimagined-and-a-reaper-that-doesnt-...
1•blueshoess•32m ago•0 comments

Appletini: The Card for Everything [video]

https://www.youtube.com/watch?v=vyAJKuzkzYg
1•frizlab•33m ago•0 comments

I don't use a Computer [pdf]

https://classes.matthewjbrown.net/teaching-files/philtech/berry-computer.pdf
3•sashank_1509•38m ago•2 comments

UnitedHealthcare to drop prior authorization for range of conditions

https://www.reuters.com/legal/litigation/unitedhealthcare-drop-prior-authorization-requirements-r...
3•elo2000•38m ago•0 comments
Open in hackernews

Dyson CameraJet electric toothbrush

https://www.dyson.com/oral-care/electric-toothbrush/camerajet/ceramic-ultra-blue
61•noja•56m ago

Comments

Oscalemor•49m ago
500 bucks for a toothbrush, but could be some interesting angles. Always dreamed of removing plaque myself, future of robotic dentistry
wkoszek•21m ago
If this is doing better waterpik + toothbrush and perhaps has a long guarantee and leaves you with a 2x normal feeling every morning, I could see the appeal. I dropped $60 on Waterpic and it broke. So then I got a better Waterpik for $100+ but it was clunky unit with bigger water container that didn't fit in my small bathroom. And it broke. But I do like the feeling of electric toothbrush.
darksim905•14m ago
an ultrasonic scaler is far better at removing plaque and build up than a waterpik. I find that a waterpik is only really best at areas where there is high crowding, or hard to reach areas behind molars, etc.
andrewinardeer•19m ago
AUD $800
Normal_gaussian•18m ago
Unfortunately $500 isn't much on the scale of dental care if it actually works.
heikkilevanto•30m ago
Clever solution, but I am not sure I can see a matching problem
wkoszek•20m ago
Human teeth need cleaning :)
MeetingsBrowser•30m ago
But its september, not april
sashank_1509•28m ago
lol, nice to see some engineering company building outlandish product. Not everything needs mass appeal, this is not for me but maybe some one finds this interesting
testfrequency•15m ago
Their headphones with the air filtration was pretty wild, and surprisingly the headphones themselves are very comfortable and sound great.
vinni2•27m ago
The water jet ruined my teeth. I would not advise anyone to use them.
mrnotcrazy•24m ago
Any water jets or dyson brand? I haven't had a single dentist tell me anything negative about them but I also don't trust dentists
benguillet•21m ago
How so? Never heard of anyone having any issues with them, and they are recommended by dentists pretty often
compiler-guy•5m ago
I have had two different dentists recommend water flossers in the past. Got one ans a gift several years ango about two years ago and am pretty happy.

I believe that sometimes there are bad outcomes from standard medical advice—humans are messy and the world is complicated—but I would like to know much more about the failing case before making a judgement.

system2•21m ago
How is that possible? Did you use extreme pressure that penetrated your gums? I use Waterpik every day, and my teeth are cleaner than ever.
wahnfrieden•16m ago
Just a guess but perhaps what is in the water may also make a difference
tedtimbrell•26m ago
Never been less satisfied than having bought a Dyson vacuum. Cheap plastic construction
duderific•20m ago
I like mine ok. It's lightweight and gets the job done well enough. Are there vacuums out there nowadays that aren't cheap plastic construction?
wahnfrieden•17m ago
Miele is plastic but excellent
embedding-shape•14m ago
> Are there vacuums out there nowadays that aren't cheap plastic construction?

As someone in the market for a new (portable) vacuum cleaner, who has a Dyson now and no longer wants to, is there really nothing out there that isn't so flimsy and plasticky and still portable?

jimnotgym•13m ago
Yes. Meile vacuums are made out of quality plastic, and seem to survive bring dropped down the stairs better than my coccyx did.

Due to the unfortunate quirk of language, its hard do describe how much better I like my Meile bagged vacuum than my Dyson. See my Dyson sucked, but the Meile really sucks.

charlesfries•19m ago
You'd rather your vacuum be made of metal?
kooi•26m ago
Man marketing really screwed a great engineered product.

4k resolution mouth camera?? That's why we go to a dentist every 6 months because I wouldnt know wtf im looking at.

"Oh there's that canker sore I feel. Huh, at least I can see it"

Bruh, you don't need a camera for gap detection. Just stick an IR sensor, detect change in light. Boom, $0.05.

charcircuit•21m ago
>I wouldnt know wtf im looking at.

The camera is for the ai: "Dyson's Gap Optical Targeting™ prevents plaque formation by detecting the gaps and jetting between teeth every time you brush.²"

efficax•20m ago
dentists made up the 6 month rule. There's no evidence that it improves outcomes, for most people with healthy teeth, 24 months is fine:

https://pmc.ncbi.nlm.nih.gov/articles/PMC7701991/

darksim905•13m ago
healthy teeth are not the same as healthy gums, or oral health as a whole.
agnosticmantis•16m ago
Presumably AI is going to process the images and detect issues and suspicious changes.

On paper it looks like a solid application of vision models.

hex4def6
benatkin•25m ago
The HN title makes it sound like Toothbrush is their brand, and with the appropriation of common terms for the sake of the brand, I bought it.

I would be disinclined to use it. It reminds me of the Astral Codex Ten Article about the Midjouney Scanner https://www.astralcodexten.com/p/preliminary-thoughts-on-the... , as well as those who've had problems with AirPods. https://discussions.apple.com/verify-human/verify.html?next=... (42 pages) What sounds the most amazing in a press release is often not the most medically sound.

Edit: it's hard to find clear info on the risks of using an electric toothbrush or even on overbrushing, because a lot of search results are blogspam. To me it's unclear, but there is a point of pressure at which the cleaning effect stops, and it is better not to go beyond that.

__float•22m ago
Don't worry, they wouldn't lose the chance to trademark something silly like CameraJet™
rvz•25m ago
This is the gold standard of how to properly apply AI to an existing product like a toothbrush, with significant engineering quality that actually makes it better.

That is what I call not "slop".

timmg•25m ago
I would happily spend $500 on this if it really did what it claims to. Maybe.

But I find myself a bit skeptical. Would love to see some long-term third party testing on it.

ChrisArchitect•22m ago
Some more discussion: https://news.ycombinator.com/item?id=49526255
SpyCoder77•19m ago
I laughed out loud when I read the title, but the more I read about it, it actually sounds really cool. I know that is just their advertising and marketing jargon that is doing this but it does sound awesome... definitely not 500$ worth of awesome though
system2•19m ago
This page must be one of the worst product image and video displays I've ever seen. Videos are probably for ultra-ADHD Gen Z kids.
tengbretson•17m ago
Not really excited for a $500 toothbrush, but this should have an awesome impact on the rest of the market.

Putting the word "camera" in the name seems pretty dumb, but who knows? Maybe I'm the dumb one.

ninalanyon•16m ago
"Clinically tested

Dyson CameraJet™ is clinically proven to be more effective in improving gum health by removing and preventing plaque buildup.² Vs a manual tooth brush. "

So they didn't dare compare it against a 20 EUR Braun Oral B?

josefresco•16m ago
My dentist uses AI for X-ray analysis. I wish I remembered the name but the monitor was facing me and it was obvious. They also use some sort of fancy imaging tool that they run around my mouth to create a 3d image.
jader201•16m ago
Do people on HN actually buy/like Dyson products?

My impression is they're actually way overpriced relative to their quality/value, and get away with it due to effective marketing and aesthetic design.

To be fair, I've never owned a Dyson product, but have used them, and they just seem meh at best.

Just really surprised to see a Dyson announcement get upvotes on HN.

danudey•9m ago
I borrowed a dyson vacuum once from a neighbour. Despite using it to vacuum my apartment after already having used my own vacuum, it filled up almost instantly with stuff my personal vacuum left in the carpet.

My current vacuum is a V15, and I like it a lot. It was expensive (and a gift), but it's very effective, has a lot of attachments to make it easier to clean upholstery/the carpet/a computer/drawers/hardwood/the window frames/whatever, comes with a wall mount that the cable connects to so you can just put it in the mount and it charges. The one issue I had seems to be a relatively well-understood issue with the electronics, which resulted in me having to spend another $100+ on a new housing - the electronics + motor + LCD screen + etc., basically the whole 'vacuum' part of the vacuum. Given how well it's treated my so far, though, I'm not too miffed.

Our last vacuum (which we still have) was a Miele, and while it was also fantastic it was far more of a pain in the ass since it's a plug-in with a bag vs. a cordless canister. The quality is similar, I think the Dyson is a bit better, but I use it exclusively because it's far easier to go get it, vacuum up a spill, and put it back. I know that's more of a comparison between canister and bag vaccums, but the fact that they're around as effective despite the dyson being a canister is I think a point in its favor.

Whether all of their stuff is as good, or only the more expensive stuff, I can't say.

kin•15m ago
Curious how much replacement heads will cost if they're going to stick an RFID in every single one. Surely there's a cheaper solution to track when you switched heads.
noja•7m ago
A two-pack of brush heads costs 25 francs, and the toothpaste and mouthwash cost 10 francs each.

From https://www.galaxus.ch/en/page/dysons-electric-brush-sprays-...

ghostbrainalpha•14m ago
For $500 I want it to brush my teeth for me, like the robo arm from "The Jetsons".

https://youtu.be/-0S3Jf-NxdI?si=hpyEcQUzguDDQaQ6

swiftcoder•12m ago
Having once bought a girlfriend the $400 Dyson hairdryer, I tried to guess the price before I clicked the link, but I still guessed low.
VariousPrograms•12m ago
Water flossers with handheld tanks are already unwieldy. I can't imagine using one with the head vibrating, water coming out of my mouth, and I'm trying to view the inside of my mouth in an app. Replaceable battery though. $20 Sonicare can't do that!
medlazik•12m ago
"Innovation" needs a central committee, humanity can't keep producing such ridiculously stupid products nobody asked for
shhsshs•10m ago
"AI toothbrush" was not on my 2026 bingo card.

Surprisingly, $30 for two replacement heads is comparable to other electric toothbrushes (not counting third-party bulk knockoff replacements, which I have been using for years without issue). The RFID reader might force you to buy the official replacements, though.

bravoetch•9m ago
Dyson seem to be the champion of turning a cheap effective device that's well understood into the same device but an order of magnitude more expensive. Are people still buying it?
jayde2767•9m ago
A purchasing decision for households: buy a $500 vacuum or a $500 toothbrush. Dyson competing with itself for limited consumer discretionary income on luxury purchases.
jimnotgym•7m ago
I highly recommend this technical analysis of the advantages of the smart toothbrush, it should help the sceptics.

https://youtu.be/V39qPwKpcGg?is=tH7WYtkzHik_HJpd

buybackoff•7m ago
I hope Bosch never lunches anything like that, for the sake of people's dents not being ground or soaked up. /s

I have B at home for vacuum and regularly see D at rentals, and D is just not even close to the same league, in my view. It's terribly overhyped brand. But for some reason the hype works, my wife believes in their marketing nonsense. At least both of us agree that Philips is the best for what Bosch doesn't cover, such as toothbrushes.

glimshe•7m ago
Does it significantly reduce cavities and gum disease? In other words, what's the effect of the AI water jet on dental health?
RGamma•18m ago
Ruined how? Hard to imagine a consumer handheld water jet can erode enamel.

That said this looks like a ridiculously overengineered product. Electric toothbrushes have come a long way, at a fraction of the price.

thereisnospork•15m ago
Carbon fiber and 3d printed titanium is probably where I'd start for materials to design a high end vacuum to be light/strong/durable. Injected molded magnesium alloy would also be a candidate if production qty was high enough to offset the tooling.
tedtimbrell•12m ago
Metal portions would be nice but i get it’s a weight thing. Also emphasis on it being cheap plastic rather than just plastic. Several parts of mine cracked and broke within a year.
kypro•17m ago
My mum used to be a professional cleaner and she would often explain to people there's a reason professionals never use Dysons.

That's not to say it's a bad product, but I've had my Henry vacuum for decades, and in that time it's been kicked down the stairs and used vacuum up all kinds of stuff it probably wasn't design for, but it's still just as good as the day I got it.

danudey•15m ago
I bought a Dyson vacuum, or rather I was given one as a gift from my wife after she saw a joke twitter post about a man being happier about a new vacuum than the birth of his own kids. She gave it to me on Christmas Eve because I was about to vacuum the entire house with our old vacuum - which was also a fantastic vacuum, for the record.

My feedback:

1. It works great. I had to empty it several times because it was picking up so much more stuff than our existing vacuum did - mostly pet hair and the like.

2. It's the one with the little laser thing, which is a dumb little gimmick until you see it in action and then it's life-changing - if you're like me and find satisfaction in picking up every invisible crumb anywhere.

3. After a year and a bit, maybe less, it started misbehaving. It would suddenly turn off, then you'd have to let go of the trigger and pull it again; then it would work fine. Then it would happen a few times until it worked fine. Then it almost never worked fine. I kind of tolerated it for a while until I got fed up and googled the problem, and it was suggested to buy a new housing - the electronics plus the motor, basically the whole 'vacuum' part of the vacuum, which was only just over a hundred dollars direct from Dyson. Irritating to have to spend an extra hundred bucks to get my five hundred dollar vacuum working as expectred, but expected it to cost far more.

Would I recommend it? Not sure. It's very expensive, it works very well; it has a nice wall mount that charges it and which holds a small subset of the attachments it comes with. I'm glad I have it and I use it often.

Yes, it's plastic, but if it were, for example, steel or aluminium then it would be too heavy to use for any length of time. As it is, it feels very sturdy and has held up physically very well, but I'm obviously also not rough with it so there's no reason it would have any issues unless it were, in fact, cheaply or poorly made.

exe34•11m ago
I've had this issue a few times. Took it apart and soaked/scrubbed anything without a pcb or wires coming out of it, and it worked fine after. Eventually the filter on the motor crumbled into dust (not suitable for picking up the dust from sanding paint off indoor walls). I tried to get the right one from Dyson but I ended up just grabbing something that looked like a distant cousin of the right filter off eBay and cut it into the right shape. It stopped working again after a few months, I was going to do the cleansing ceremony again, but then I dropped it and it started working fine again.

Going on 13 years now I think.

nujabe•15m ago
My wife often says the Dyson v8 vacuum is the best purchase I have ever made, that was 8 years ago.
tedtimbrell•8m ago
I bought mine because my coworkers were over the moon about it. Apparently i had a far different experience
jstummbillig•15m ago
Same for me, with their airfilter/fan combination. Loud, horrible whining noises, on top of bad aesthetics and being very expensive.
einaralex•6m ago
[delayed]
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14m ago
Bit off topic, but if you suffer from canker sores, SLS (sodium lauryl sulfate) is a known contributor to that in some people (me included).

It's a bit hard to find toothpastes without it that aren't also fluoride free, but they exist.