Interdental brushes can be as effective as or even superior to traditional floss for cleaning between teeth, particularly in wider spaces.
Taking care of our teeth involves more than just brushing; it means reaching those snug spots between them where food particles and plaque love to hide. For years, dental floss has been the go-to tool, but now interdental brushes are gaining recognition, prompting many to consider their effectiveness.
Understanding Interdental Cleaning: Why It Matters
The surfaces of our teeth that touch each other make up about 30% of the total tooth surface area. A regular toothbrush simply cannot reach these areas effectively. This leaves behind a sticky film called plaque, a bacterial biofilm that forms on teeth.
Plaque accumulation between teeth is a primary cause of gum disease, known as gingivitis, and can contribute to cavities. When plaque hardens, it becomes calculus or tartar, which professional dental cleanings are needed to remove. Consistent interdental cleaning helps disrupt this plaque formation, maintaining healthier gums and preventing tooth decay.
The Mechanics of Flossing: Traditional Approach
Dental floss, typically a thin strand of nylon or PTFE, works by being threaded between teeth and then scraped along the tooth surfaces. Its primary strength lies in its ability to access very tight contact points where teeth meet.
Proper flossing technique involves wrapping about 18 inches of floss around your middle fingers, leaving an inch or two to work with. You then gently guide the floss between your teeth using a rubbing motion, curving it around each tooth in a C-shape, and sliding it beneath the gumline. This action physically dislodges plaque and food debris.
- Waxed Floss: Often easier to slide between tight contacts without shredding.
- Unwaxed Floss: May create more friction, potentially aiding in plaque removal, but can shred more easily.
- PTFE Floss (Glide): Made from a single filament, making it resistant to shredding and often smoother for tight spaces.
Interdental Brushes: A Closer Look at Their Design and Function
Interdental brushes feature a small, bristled head designed to fit into the spaces between teeth. They come in various sizes, often color-coded, to accommodate different gap widths. The bristles work to sweep away plaque and food particles from the interproximal surfaces and along the gumline.
These brushes are particularly useful for individuals with larger spaces between their teeth, receding gums, or those wearing orthodontic appliances like braces or bridges. Their design allows for a more direct cleaning action within these wider gaps compared to floss.
Using an interdental brush involves gently inserting it into the space between two teeth and moving it back and forth a few times. It is essential to select the correct size; the brush should fit snugly but not require force to insert.
Are Interdental Brushes As Good As Floss? — The Scientific Perspective
Research suggests that interdental brushes can be as effective as, and in some cases, even more effective than, traditional dental floss for reducing plaque and gingivitis. A systematic review published in the “National Institutes of Health” indicated that interdental brushes may offer superior plaque removal compared to floss, particularly in spaces where they fit well.
The American Dental Association (ADA) acknowledges both floss and interdental brushes as effective tools for cleaning between teeth. The choice often comes down to individual preference, tooth spacing, and dexterity. For individuals with wider interdental spaces, interdental brushes often provide a more thorough clean due to their ability to fill the space and scrub surfaces.
Many dental professionals recommend interdental brushes as a primary interdental cleaning tool, especially for those who find flossing difficult or have specific dental conditions. The bristles of interdental brushes can reach into concavities on tooth surfaces that floss might skip over.
| Feature | Dental Floss | Interdental Brush |
|---|---|---|
| Effectiveness | Very effective for tight contacts and under the gumline. | Highly effective, especially for wider gaps and irregular surfaces. |
| Ease of Use | Requires dexterity and proper technique. | Generally easier for many, especially those with limited dexterity. |
| Suitability | Ideal for tight tooth contacts. | Optimal for moderate to wide gaps, braces, bridges. |
Choosing Your Tool: Factors to Consider
Selecting the right interdental cleaning tool depends on several personal factors. Your dental professional is the best resource for tailored recommendations, as they can assess your specific oral anatomy and needs.
Tooth Spacing
If you have very tight contacts between your teeth, traditional dental floss might be the only tool that can effectively slide into those spaces. For individuals with small to moderate gaps, interdental brushes come in very fine sizes that can be a suitable alternative. Wider gaps or spaces created by gum recession are particularly well-suited for interdental brushes, which can fill the space and clean more thoroughly than a thin strand of floss.
Dexterity and Comfort
Some individuals find the manipulation of dental floss challenging, particularly reaching the back teeth. Interdental brushes, with their small handles, can be easier to grip and maneuver for those with limited dexterity, such as older adults or individuals with arthritis. The comfort of use can significantly impact consistency, which is a primary driver of oral health outcomes.
| Brush Size | Typical Use | Description |
|---|---|---|
| Very Fine (e.g., 0.4mm) | Very tight spaces, front teeth. | Smallest brushes, flexible wire. |
| Medium (e.g., 0.7mm) | Common interdental spaces. | Standard size for many adults. |
| Large (e.g., 1.1mm+) | Wider gaps, braces, bridges. | Thicker bristles for wider access. |
Proper Technique for Maximum Benefit
Regardless of whether you choose floss or interdental brushes, consistent and correct technique is paramount. Using the tool incorrectly can be ineffective or even harmful to your gums.
For Interdental Brushes
- Select the correct size: The brush should fit snugly without forcing it.
- Insert gently: Angle the brush into the space between your teeth, just above your gum line.
- Clean with care: Move the brush back and forth several times, ensuring the bristles clean all surfaces.
- Rinse and repeat: Rinse the brush after each use and replace it when the bristles become worn.
For Dental Floss
- Use enough floss: About 18 inches allows for a fresh section for each tooth.
- Wrap and grip: Wrap most of the floss around your middle fingers, holding a small section taut with your thumbs and index fingers.
- Guide gently: Slide the floss between your teeth using a gentle sawing motion.
- Curve and clean: Curve the floss into a C-shape against one tooth, slide it gently under the gum line, and move it up and down. Repeat for the adjacent tooth.
Beyond Brushing: The Role of Overall Oral Hygiene
Interdental cleaning is one part of a comprehensive oral hygiene routine. Brushing your teeth twice a day with a fluoride toothpaste for two minutes remains the foundation. This removes plaque and food debris from the outer, inner, and chewing surfaces of your teeth. The combination of brushing and interdental cleaning addresses virtually all tooth surfaces, significantly reducing the risk of dental issues.
Regular dental check-ups and professional cleanings are also indispensable. Dental professionals can remove hardened plaque (calculus) that cannot be removed at home and can identify potential problems early. Think of your oral hygiene routine as a multi-faceted approach, where each tool and practice supports the others for a complete defense against oral health challenges. The key is finding what works best for you and sticking with it consistently, much like how consistent healthy eating supports overall well-being.
References & Sources
- National Institutes of Health. “ncbi.nlm.nih.gov” Systematic reviews on interdental cleaning effectiveness.
- American Dental Association. “ada.org” Guidelines and recommendations for interdental cleaning tools.
Mo Maruf
I created WellFizz to bridge the gap between vague wellness advice and actionable solutions. My mission is simple: to decode the research and give you practical tools you can actually use.
Beyond the data, I am a passionate traveler. I believe that stepping away from the screen to explore new environments is essential for mental clarity and physical vitality.