Interdental brush or dental floss: which should I use?
Neither is better in general: it depends on the space between your teeth. Where teeth touch tightly, dental floss cleans best. Where the gaps are wider — often after gum recession or around bridges and implants — an interdental brush removes more plaque. Many people need both, in different places.
Medically reviewed by Uzm. Dt. Mehmet Ercan ·
Why brushing alone is not enough
A toothbrush cleans the front, back and biting surfaces of the teeth, but not the spaces between them. That is where gum disease and decay most often start. Bleeding between the teeth is a sign of gum inflammation caused by plaque the brush cannot reach.
How to choose
| Space between teeth | Best tool |
|---|---|
| Tight contacts, no visible gap | Dental floss or tape |
| Small visible gaps | Interdental brush in the right size |
| Bridges, implants, braces | Interdental brushes, super-floss or a water flosser |
Finding the right brush size
Interdental brushes come in different thicknesses. The right size slides in without force but does not wobble in the gap. Often you need two or three sizes for different areas; your dentist or hygienist can measure them for you.
If floss is difficult to handle, a floss holder makes it easier.
In short
Floss and interdental brushes are not rivals but tools for different gaps. Bleeding that starts where the brush cannot reach is a sign that the spaces between your teeth need daily cleaning.
Frequently asked questions
How often should I clean between my teeth?
Once a day is enough for most people, ideally in the evening before brushing.
My gums bleed when I start flossing. Should I stop?
No. Bleeding usually decreases within 1–2 weeks of daily cleaning as the gums heal. If it continues, see a dentist for a gum check.
