Is Flossing Really That Important? Here’s What Dentists Say

Expert Author
Peter Nguyen Dentist Corona, CA

Dr. Peter enjoys teaming up with patients to achieve their oral health goals. He takes time to talk to patients about their needs to ensure that all their questions and concerns are addressed. Dr. Nguyen’s office uses modern technology and techniques to provide the best treatment options. When not working in the dental... more

For years, dentists have urged patients to floss daily. But every now and then, headlines pop up questioning its effectiveness, leaving many people confused. So, is flossing really worth the effort? Let’s break it down based on what dental professionals and scientific research say.

Why Flossing Matters

Brushing your teeth is essential—but it only cleans about 60% of the tooth surface. The remaining 40%? That’s between your teeth, where a toothbrush can’t reach.

Flossing removes plaque and food particles from those tight spaces. Without it, plaque can build up, harden into tartar, and lead to gum disease, tooth decay, and bad breath.

What the Research Says

Some media reports in recent years suggested there's not enough evidence that flossing helps. That stems from a 2016 Associated Press review that pointed out a lack of large, long-term studies on flossing.

But here’s what experts clarify:

  • The lack of large studies isn’t proof flossing doesn’t work—it simply means more research is needed.
  • The American Dental Association (ADA) and Centers for Disease Control and Prevention (CDC) continue to recommend daily flossing.
  • A 2019 review published in Cochrane Library showed that flossing along with brushing reduces plaque and improves gum health better than brushing alone.

So while flossing may not be a magic cure, evidence supports it as a valuable part of oral hygiene.

Dentists’ Perspective

Dentists see the impact of flossing firsthand:

  • Less gum inflammation in patients who floss regularly
  • Fewer cavities between teeth
  • Better overall oral hygiene

Dr. Matthew Messina, a spokesperson for the ADA, puts it simply:

“It’s like cleaning a room. You can vacuum the floor, but if you don’t dust the corners, it’s not truly clean.”

What Happens If You Skip Flossing?

Neglecting to floss can lead to:

  • Gingivitis – red, swollen gums that bleed easily
  • Periodontitis – a more serious gum infection that can cause tooth loss
  • Cavities – especially between teeth
  • Persistent bad breath

And once tartar forms, it can only be removed by a dentist.

Flossing the Right Way

Technique matters. Here’s how to floss correctly:

  1. Use 18 inches of floss, winding most of it around your middle fingers.
  2. Gently slide the floss between your teeth.
  3. Curve it into a “C” shape against the side of each tooth.
  4. Rub gently up and down, moving to a clean section for each tooth.

Alternatives to Traditional Floss

Don’t like string floss? You’re not alone. Luckily, there are options:

  • Floss picks – easier for kids or people with limited dexterity
  • Water flossers – like Waterpik, great for braces or sensitive gums
  • Interdental brushes – small brushes that fit between teeth

The best floss is the one you’ll actually use.

Final Thoughts

Yes—flossing is that important. While it’s not a substitute for brushing or professional cleanings, it fills a critical gap in your oral care routine. Daily flossing can help prevent gum disease, cavities, and even save you money and pain down the road.

If you’re unsure how to start or have questions, ask your dentist. They’ll be happy to guide you.