Water Flosser vs String Floss: Which One Wins?

Both remove plaque well when used properly. But they suit different people.

String floss is generally better at getting into tight spaces between teeth. Water flossers are often easier to use every day and gentler on your gums.

So which one wins? It depends on you. Here’s what dentists actually say, and how each tool holds up once you look past the marketing.

How Water Flossers Work?

A water flosser sends a stream of pressurised water between your teeth and along the gumline.

The water jet dislodges food particles and loosens plaque. Most devices let you adjust the water pressure. Some come with different tips for braces, implants, or general use.

You fill the water tank, choose your pressure setting, and glide the tip along your gumline. No dexterity or technique required, just steady hands.

Many people find water flossers oddly satisfying to use. There’s no string to snap, no fingers to wrap, and no awkward reaching into the back of your mouth. For anyone who has always dreaded flossing, that alone can make daily flossing far more likely to actually happen.

Some models also include a pulsating water setting. The pulsing action combined with the pressurised water is thought to massage the gums slightly, which some patients find improves gum health over time. This is one reason water flossers work so well for people who already have some gum sensitivity.

Water flossers also come in cordless and countertop versions. Cordless models are smaller and easier to store, which suits shared houses or smaller bathrooms. Countertop models tend to hold more water and offer stronger pressure settings, which some people prefer for a deeper clean.

How String Floss Works?

Traditional dental floss works differently. It relies on physical contact.

You wrap the floss around your fingers and guide it between each tooth. The floss scrapes plaque off the tooth surface, including just below the gumline. Waxed floss glides more easily. Unwaxed floss can grip tighter in narrow spaces.

Done well, string floss reaches areas a toothbrush simply cannot. Done poorly, it can cause bleeding gums or missed spots.

Traditional string floss has been the standard interdental cleaning tool for generations, and for good reason. It’s cheap, it travels well, and when used correctly, it removes plaque from tight spaces that other tools struggle to reach. The catch is the technique. Many people either floss too roughly, snapping the floss down onto the gum, or skip sections entirely because it’s fiddly.

Floss picks and floss holders can make the process easier for people who find wrapping floss around their fingers awkward. These still use the same scraping action as regular floss, just with a plastic handle doing the gripping for you.

Water Flosser vs String Floss: Side-by-Side Comparison

Here’s how the two compare across the areas that matter most.

A systematic review published in the Journal of Indian Society of Periodontology found water flossers tend to remove more plaque than string floss, particularly in hard-to-reach areas. Meanwhile, Mayo Clinic notes that if you already floss well with string floss and have no bleeding or gum issues, there’s no real need to switch.

It’s worth remembering that most flossing studies only run for a few weeks. Long term, consistent daily use of either tool tends to matter more than which one edges ahead in a short clinical trial. A water flosser used properly every day will usually beat string floss used once a fortnight, and the reverse is just as true.

Cost is also worth weighing up. String floss is cheap and easy to replace. A water flosser is more of an upfront investment, though most units last for years with basic care. If you’re deciding between the two purely on price, floss wins in the short term. If you’re weighing long-term oral health and consistency, the maths can look quite different once you factor in whether you’ll actually use the tool daily.

Who Should Use a Water Flosser?

Water flossers suit certain people especially well.

• People with braces, bridges, or implants. Wires and brackets trap food and plaque. A water jet clears this out without snagging on hardware the way string floss can.
• People with limited dexterity. If arthritis or hand mobility makes wrapping floss around your fingers difficult, a water flosser removes that barrier entirely.
• People who find string floss uncomfortable or who bleed easily. If floss makes your gums bleed or feel harsh, a water flosser is often gentler while still reaching between teeth and along the gumline.
• People managing gum disease. Patients already dealing with early gum disease are sometimes advised to use a water flosser because it’s gentler on inflamed tissue while still helping remove plaque near the gumline.

Busy parents and teenagers also tend to get on well with water flossers, mostly because the learning curve is shorter. A child who struggles to master the string floss technique can usually manage a water flosser with a bit of supervision.

Who Should Stick with String Floss?

String floss still has a firm place in oral hygiene.

• People with tightly spaced teeth. Traditional dental floss gives more precise contact in narrow gaps between teeth than a water jet can manage.
• Budget-conscious or travel-frequent patients. Floss is cheap, doesn’t need charging, and fits in any bag. A water flosser needs power and a water source.
• Anyone with good technique is already getting results. If your current flossing technique works and your gums are healthy, there’s little reason to change what’s working.

People who prefer a simple routine may also stick with floss simply because it’s familiar. There’s nothing to charge, no water tank to refill, and no bench space needed. For interdental cleaning on the go, whether that’s after a work lunch or while travelling, floss still wins on convenience.

Can You Use Both?

Many dentists suggest combining the two rather than picking one.

• Use string floss for tight contacts between teeth.
• Follow up with a water flosser for the gumline and harder-to-reach spots.
• This combination targets plaque from more angles than either tool alone.

Using dental floss and a water flosser together isn’t overkill. It’s simply covering more ground. Think of it less as water flossing vs traditional flossing, and more as two tools doing two slightly different jobs.

Some patients like to floss with string floss first, then finish with a water flosser to rinse away any loosened debris. Others do the reverse, using the water flosser to loosen plaque before going in with floss for the tighter spots. Either order works. What matters is that both tooth surfaces and the spaces between them get proper attention.

What Your Greensborough Dentist Recommends

The truth is, the best tool is the one you’ll actually use every day.

The Australian Dental Association’s 2024 consumer survey found that a striking 74% of Australians rarely or never clean between their teeth. Only 21% do it daily, which is what’s recommended. Brushing only cleans around 60% of tooth surfaces. Cleaning between teeth handles the other 40%.

That gap matters. Skipping interdental cleaning, whether with floss or a water flosser, leaves a huge portion of your mouth unattended, and over time, that can lead to plaque build-up, gum disease, and more complicated dental work down the track.

If regular flossing has never stuck as a habit, a water flosser might be the easier entry point. If you’re already comfortable with string floss, keep going. What we tend to see chairside is that patients who find a tool they’ll actually stick with, whether that’s a water flosser or plain old string floss, have noticeably better gum health at their next check-up.

We also encourage patients to bring their flossing questions to their next visit. A quick demonstration in the chair often clears up more than any product label. Whether you’re using a water flosser or working on your string floss technique, small adjustments to angle and pressure can make a real difference to results.

Either way, daily habit matters more than the tool itself.

For more guidance on keeping plaque and gum disease at bay between visits, have a look at our preventive care services. And if it’s been a while since your last clean, book in for a dental check-up and clean. Our Greensborough team can also walk you through the flossing technique in person, whichever tool you choose.

FAQs

Is a water flosser as good as string floss

For most people, yes. Some studies even suggest water flossers remove slightly more plaque, especially around braces or implants.

Can a water flosser replace brushing

No. A water flosser cleans between teeth. You still need to brush twice daily to clean the tooth surfaces themselves.

Do dentists recommend water flossers

Many do, especially for patients with braces, implants, or limited dexterity. Others are just as happy with a good string floss technique.

How often should I floss?

Once a day, ideally before bed. Whether you use string floss or a water flosser, daily use is what protects your gums.