Interdental brushes and dental floss both target plaque between teeth, but studies show interdental brushes often outperform floss in plaque removal and gum health improvement.
This blog compares their effectiveness, usage, and suitability based on scientific evidence and dental guidelines.
What Are They?
Dental floss is a thin string that slides between teeth to scrape plaque and debris from contact points. Interdental brushes are small, cone- or cylinder-shaped brushes designed to fit into gaps between teeth, scrubbing surfaces more thoroughly.
Both remove interdental plaque that toothbrushes miss, reducing risks of gum disease and decay.
Effectiveness Comparison
| Aspect | Interdental Brushes | Dental Floss |
| Plaque Reduction | Greater reduction (e.g., 0.75 index drop); superior in studies on periodontitis patients | Lesser reduction (e.g., 0.38 index drop); effective but less so |
| Gingival Inflammation | Reduces bleeding and inflammation more effectively; NIH study confirms | Reduces inflammation but inferior to brushes. |
| Probing Depth | Larger reductions in gum pockets | Minimal impact compared to brushes |
| Patient Compliance | Easier use leads to better adherence | More technique errors and discomfort. |
Interdental brushes excel in open spaces or with gum recession, while floss suits tight contacts.
Pros and Cons
Interdental Brushes
- Pros: Gentle on gums, less bleeding risk, easier for beginners, effective for larger gaps or braces.
- Cons: Wrong size can damage papillae; not ideal for very tight teeth.
Dental Floss
- Pros: Versatile for tight spaces, inexpensive, ADA-endorsed for broad use.
- Cons: Hard to master, can cut gums if snapped, lower compliance.
How to Use Each
Interdental Brushes
- Select size that fits snugly without forcing.
- Hold like a pencil, insert gently, move back-and-forth 2-3 times per gap daily before brushing.
- Clean from both sides for molars.
Dental Floss
- Use 18 inches, wrap around fingers.
- Slide gently between teeth in C-shape, rub up-down below gumline, use fresh section per gap.
Consult a dentist for personalized fit.
Who Should Use What?
Use interdental brushes if gaps exist, gums are sensitive, or for periodontitis. Opt for floss with crowded teeth or no gaps. Both beats no cleaning; combine with brushing.
Take Action Today
Switch to interdental brushes or perfect your floss technique for better oral health. Book a consultation at Amend Dental Centre, experts in personalized interdental care and advanced treatments, schedule your visit now for a plaque-free smile!
Read more in our Guide to Dental Care & Oral Health
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