What Is Flossing? Cleaning Between Your Teeth Explained

Flossing is an oral hygiene practice that uses a thin filament or other tool to clean the tight spaces between teeth and below the gumline, removing food particles and plaque that a toothbrush cannot reach.

What Flossing means

Flossing is the practice of cleaning the surfaces between your teeth to remove plaque, a sticky film of bacteria, and food debris. While brushing cleans the front, back, and top surfaces of teeth, it can’t effectively reach into the tight gaps where teeth meet. Flossing targets these specific areas, making it a crucial partner to brushing in a complete oral hygiene routine. Its main purpose is to disrupt bacterial colonies and remove particles from areas that are prone to cavities and gum inflammation.

While traditional string floss is the most well-known tool, the practice is more broadly called interdental cleaning. Other tools can achieve the same goal, including dental tape, floss picks, tiny interdental brushes, and water flossers that use a stream of pressurized water. The best choice often depends on the spacing of your teeth, the presence of dental work like braces or bridges, and your personal dexterity and preference. All these methods are designed to physically dislodge plaque from between the teeth and just under the gumline.

Flossing is most effective when done with care and consistency, typically once a day. The technique is more important than the force applied. Aggressively snapping the floss can injure your gums, while a gentle, deliberate motion is more effective. It involves carefully guiding the floss and rubbing it along the side of each tooth in a C-shape. For many, it takes a little practice to get comfortable with the motion, but it can quickly become a routine part of taking care of your health.

How to floss correctly

1. Start with a long piece of floss, about the length from your hand to your elbow. Wind most of it around one middle finger and a small amount around the other.
2. Hold a small section of floss tightly between your thumbs and index fingers, leaving about one to two inches to work with.
3. Gently guide the floss between two teeth using a careful rubbing motion. Avoid snapping it down onto your gums.
4. When the floss reaches the gumline, curve it into a C-shape against one tooth. Gently slide it into the space between the gum and the tooth.
5. Hold the floss against the tooth and gently scrape the side of the tooth, moving the floss away from the gum.
6. Unwind a fresh section of floss from your finger and repeat the process for every tooth, including the back side of your very last teeth.

Flossing vs. similar terms

Common misconceptions

• Myth: If my gums bleed when I floss, I should stop. Bleeding is often a sign of gum inflammation caused by plaque buildup. Consistent, gentle flossing usually helps improve gum health over time, which can reduce bleeding.
• Myth: Brushing is enough, so flossing is optional. A toothbrush can’t properly clean between teeth. Flossing is necessary to remove plaque from these areas and is a key step for maintaining oral health.
• Myth: You have to floss really hard to get your teeth clean. Flossing requires a gentle but thorough technique. Applying too much force or snapping the floss can be ineffective and may even damage your gums.

Related terms

• Tongue Scraping

How this entry was made: drafted with AI assistance from general, widely published definitions, checked in a separate verification pass for invented numbers and claims, and edited by the Millennials Wellness editors. General information only, not medical, financial or legal advice. Last checked October 2026. Our ground rules · Back to the glossary