Water flossing with braces, aligners and other dental work: what actually works

We both had braces. Not at the same time — there are a few years between us — but we each spent long enough threading string floss under a wire to develop strong opinions about it.

If you have braces right now, you already know the problem. Your orthodontist tells you to floss every day. Flossing every day means feeding a thin piece of string under an archwire, one tooth at a time, twenty-something times, without snapping it into your gums. It takes ten minutes when you're tired and you've already brushed. So you skip it on a Tuesday. Then Wednesday. Then it's been a fortnight and you've got a check-up on Friday.

This isn't a discipline problem. It's a design problem. And it's the reason we ended up building an oral care brand instead of just complaining about it.

Braces are the clearest case, so that's where we'll start — but the same reasoning applies to aligners, implants, bridges, retainers and a few other situations. There's a section on those further down, and one on what these things should actually cost.

Why braces make flossing genuinely harder

Brackets bond to the front of each tooth and a wire runs between them. That creates a lot of new surfaces and small gaps where plaque and food collect, in places a toothbrush can't easily reach and string floss can only reach after being threaded underneath the wire.

Two things follow. The mechanical job is bigger than it was before braces. And the time it takes has roughly tripled, right when you need to be doing it most carefully.

Orthodontic hardware is also associated with more gum inflammation during treatment — gums that puff up and bleed when brushed. That's uncomfortable, and it makes people brush and floss more gently, which cleans less well, which inflames the gums further. It's a loop worth breaking early.

What the research actually says

Water flossing has been studied a fair bit, and the results are consistent enough to be worth repeating plainly.

Across clinical trial data, water flossers have been found meaningfully more effective than string floss at reducing gum inflammation, and up to twice as effective at reducing gum bleeding within four weeks. In lab testing, a water flosser removed over 99% of plaque from the tooth surfaces it was aimed at within a few seconds.

The American Dental Association also awards its Seal of Acceptance to water flossers that demonstrate they're safe and effective against plaque and gingivitis — which matters mainly because it means the category has been assessed independently, not just marketed well.

Two honest caveats. Water flossing is not a replacement for brushing, and no reputable manufacturer claims otherwise. And research findings describe averages across study populations, not a promise about your mouth — your orthodontist knows your teeth and we don't.

How to actually use one with braces

Most people get this slightly wrong at first, us included.

Lean over the sink and keep your mouth almost closed. The single most common mistake is standing upright with your mouth open. You'll redecorate your bathroom. Lean forward, let the water run straight back out.

Start on the lowest pressure setting. Especially in the first weeks after braces go on, or after an adjustment, when gums are tender. Work up over a few days once your gums settle. Higher isn't better; comfortable enough to do daily is better.

Trace the wire, don't blast the teeth. Aim just above each bracket, let the water run down around it, then move to the gap between the bracket and the gum. Then do the same from behind. Roughly two seconds per tooth is plenty.

Do the gum line deliberately. Angle the tip at about ninety degrees to the tooth, right where tooth meets gum. That's where inflammation starts and it's the spot people rush past.

Do it after brushing, not instead of. Brush first, then flush out what the brush loosened.

Expect some bleeding early on. Gums that bleed usually bleed because they're already inflamed. In most cases it settles over a couple of weeks of consistent cleaning. If it doesn't, that's a conversation for your orthodontist rather than something to push through.

The whole routine takes 60 to 90 seconds once you're used to it. That's the actual point — not that water flossing is magic, but that it's fast enough that you'll still be doing it in month eight.

Beyond braces: other dental work this helps with

Braces are the obvious case, but the underlying problem is the same wherever string floss struggles to physically reach. If any of these describe you, the reasoning carries across — though as always, your own dentist knows your situation and we don't.

Invisalign and clear aligners

Aligners come out to eat, which sounds like it makes cleaning easier. In practice it introduces a different problem: whatever is on your teeth when the aligner goes back in stays sealed against them for the next several hours. Lunch at a desk, aligners back in, and you've trapped sugar and debris against the enamel for the rest of the afternoon.

That's why a fast cleaning step matters more with aligners than people expect. A water flosser takes a minute or so, which makes it realistic to do after a meal at home before your trays go back in. It also helps around the small composite attachments bonded to your teeth during treatment, which collect plaque at their edges much like brackets do.

Fixed and bonded retainers

A retainer wire bonded behind your front teeth is a permanent floss obstacle — you can't get string behind it without a threader, and most people quietly give up. Water goes where string can't be threaded, which is exactly why this comes up so often in our reviews. One customer who spent over twenty years working in the dental industry told us this was the specific thing that sold her on it.

Dental implants

The tissue around an implant needs the same daily attention as gum around a natural tooth, and arguably more, because the area where the implant meets the gum is a common site for inflammation. Water flossing is a gentle way to clean around that junction without scraping at it. Use a low pressure setting and ask your dentist how they'd like you cleaning around yours.

Bridges, crowns and veneers

A bridge has a false tooth sitting over the gum with a gap underneath that string floss simply cannot enter without a threader. Crowns and veneers have a margin where the restoration meets the tooth, right at the gum line, which is precisely where plaque causes trouble. Both are cases where a directed stream of water reaches something a piece of string is the wrong shape for.

Partial dentures and clasps

The teeth that anchor a partial denture take on extra work, and the clasps that grip them create sheltered spots that collect debris. Cleaning around those anchor teeth properly matters, since they're the ones holding everything else in place.

Gum disease and deep pockets

If your dentist has mentioned pocket depths, bleeding on probing or early gum disease, they've probably also told you that daily cleaning between teeth is the part that actually changes the outcome. Water flossing is one of the better-studied ways of doing that, and it's gentler on already-inflamed tissue than forcing string into a sore gap. This is a case to manage with your dentist rather than on your own — but it's a real reason people switch.

Wisdom teeth and crowded back molars

Partially erupted wisdom teeth create a flap of gum that traps food, and it's an awkward, gag-inducing spot to reach with string. Same for anyone whose back molars are tight against each other. A water stream gets there without the contortion.

Arthritis, limited dexterity, or just hating floss

String flossing is a two-handed fine-motor task performed inside your own mouth. If you have arthritis, hand tremor, reduced grip, or you're helping someone else with their teeth, that's genuinely difficult — and it's a common reason people stop. Holding a single handle and pointing it is a far lower bar. This is also, honestly, the reason plenty of people without any dental work at all end up switching.

What should a water flosser cost in Australia?

Prices move around constantly, so treat this as the shape of the market rather than a price list — check current pricing before you buy anything, including ours.

Broadly, there are three tiers.

Unbranded imports, roughly $40–50. Marketplace listings from sellers you've never heard of. Some are fine. The gamble is that there's no warranty worth claiming, no support if it stops charging in month four, and replacement nozzles may simply stop being available. Cheapest to buy, most likely to be replaced.

Established brands, roughly $70–100 for a cordless unit. Recognisable names sold through pharmacies and electrical retailers. Real quality control and real support. Worth knowing that entry models in this tier are often deliberately basic — two pressure settings, two nozzles, and in some cases replaceable AA batteries rather than a rechargeable battery.

Countertop units, roughly $100–170. Large reservoir, mains powered, generally the most powerful option. Excellent if it can live permanently on your bathroom bench, useless if you travel or share a small bathroom.

The part people forget: what it costs after you buy it

Sticker price isn't the whole picture.

Nozzles wear out. They're generally replaced every few months, like a toothbrush head. A unit that ships with two nozzles will need restocking sooner than one that ships with five, and proprietary replacement tips are usually the most expensive way to buy them.

Batteries. Some budget cordless models run on replaceable AA batteries. That's convenient in the sense that it never needs charging, and an ongoing cost and a pile of dead batteries in every other sense. A rechargeable unit that runs for weeks between charges costs nothing to keep running.

Whether you keep using it. A $150 flosser that lives in a cupboard is worse value than a $50 one you use nightly. The most expensive water flosser is the one you abandon.

Where Flossy sits

The Flossy Oral Jet is $59.99. That's below the usual recommended price of a major-brand cordless unit and above the unbranded imports, which is a deliberate position rather than an accident.

For that you get five nozzles in the box rather than two, three pressure modes rather than two, a USB-C rechargeable battery with about two hours of run time — six weeks to a couple of months of twice-daily use, depending how thorough you are — rather than AA batteries you keep buying, an IPX7 rating, and a one-year warranty with an Australian business you can actually email. Our bundles bring the per-unit cost down further if more than one person in the house needs one.

We're not going to tell you we're the cheapest, because we're not. You can spend $44 on a marketplace listing. What you're paying the difference for is nozzles included rather than upsold, a battery you charge instead of replace, and somebody to contact when something goes wrong.

What to look for when you're choosing one

Cordless, if you ever leave the house. Plenty of water flossers are countertop units with a mains cable and a large reservoir. They work well and they never leave the bathroom. If you're at uni, in a share house, travelling, or staying at someone else's place, a cordless unit is the one you'll actually keep using.

Adjustable pressure. Non-negotiable with braces, implants or sore gums. You want a genuinely gentle setting for tender weeks and something stronger for later.

A waterproof rating. Look for IPX7 or better, so using it in the shower or over a wet sink isn't a problem.

Rechargeable, not AA. Check which you're buying — it's a running cost that's easy to miss at the checkout.

Nozzle options, and what they cost to replace. Different tips suit different jobs. Check what's included rather than what's sold separately, and check the price of refills before you commit to a system.

Ask your dentist or orthodontist. Genuinely. Some people have specific dental work where a particular technique or pressure is advised, and a two-minute question at your next appointment is worth more than any article.

Where Flossy fits, honestly

We didn't invent the water flosser. We're not going to pretend we did.

What happened is that we went looking for a good cordless one, tested a stack of units, found a manufacturer whose engineering and battery life we trusted, and built a brand around it — real photography instead of renders, honest specifications, and support you can actually reach.

Angie, a customer who spent over twenty years working in the dental industry, told us it cleans well between her teeth and behind her front teeth where she has fixed wire retainers. That's the review we're proudest of, because it's the specific case that's hardest to clean.

If a countertop unit suits your life better, buy a countertop unit. The best water flosser is the one you'll still be using in six months.

Common questions

Can I use a water flosser with braces straight after they go on?
Generally yes, and gently — start on the lowest pressure while your teeth and gums are sore. Confirm with your orthodontist, since they know your treatment plan.

Can I use one with Invisalign?
Yes. Take your aligners out, clean your teeth, then put them back in. The point is not sealing food and plaque under the tray for the next several hours.

Is it safe around implants, crowns and bridges?
Water flossing is not abrasive, and it's commonly recommended for exactly these situations. Use a lower pressure around implants and check with your dentist about your particular restorations.

How much should I spend?
Enough to get adjustable pressure, a rechargeable battery and spare nozzles included. Beyond that you're mostly paying for reservoir size and brand.

Does it replace string floss completely?
For many people with braces or bridgework it becomes the main method, simply because it's the one that gets done. Your dentist may still want you using floss threaders or interdental brushes in specific spots.

Will it damage my brackets?
Water flossing is not abrasive — it's water. Normal use isn't a risk to properly bonded brackets.

How long should it take?
Around 60 to 90 seconds for a full pass, once you've got the technique.

Warm or cold water?
Warm. Cold water on sensitive teeth is unpleasant enough that you'll stop doing it.

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We're a brand, not your dentist. This article is general information about oral hygiene, not clinical advice — for anything specific to your teeth, your treatment, your implants or your gums, talk to your dentist or orthodontist. Prices mentioned are indicative of the Australian market at the time of writing and change often. Invisalign is a trademark of Align Technology; we're not affiliated with them.

Flossy is run by two brothers on the Gold Coast. Read our story.