Detailed side-by-side comparison
Flossing is essential for removing plaque and food debris from between teeth where a toothbrush cannot reach. Traditional string floss has been the gold standard for interdental cleaning for decades, but water flossers (also called oral irrigators) have become increasingly popular as a more convenient alternative. Both methods are effective at improving gum health, but they work differently and excel in different situations. This guide compares the evidence, ease of use, and ideal applications for each method.
| Factor | Water Flosser | String Floss |
|---|---|---|
| Cost | $30 - $100 for the device | $2 - $6 per package |
| Ongoing Cost | $5 - $10 per tip (every 3-6 months) | $15 - $35 per year |
| Plaque Removal | Good; removes plaque from gum line and between teeth | Excellent; physically scrapes plaque from tooth surfaces |
| Gum Health | 29% more effective at reducing bleeding (studies) | Effective at reducing gingivitis with proper technique |
| Ease of Use | Very easy; point and spray | Requires manual dexterity and proper technique |
| Time Required | About 1 minute for full mouth | 2 - 3 minutes with proper technique |
| Portability | Bulky; requires power source or battery | Extremely portable; fits anywhere |
| Best for Braces | Excellent; cleans around brackets easily | Difficult; requires threaders or special floss |
| Best for Implants | Excellent; gentle on implant restorations | Good; must be careful around implant components |
| ADA Recommendation | ADA Seal of Acceptance available | ADA recommended as the standard |
The best flossing method is the one you will actually use every day. String floss is slightly more effective at physically scraping plaque, but water flossers are better for gum health and compliance.
Patients with braces, bridges, or implants
Water flossers excel at cleaning around orthodontic hardware and dental work where string floss struggles.
People who hate flossing and skip it regularly
A water flosser is much easier to use and can dramatically improve compliance with daily flossing.
Patients with gum disease (gingivitis or periodontitis)
Water flossers have been shown to be more effective at reducing gum bleeding and inflammation.
Travelers and people wanting the simplest option
String floss is the most portable, affordable, and universally available option.
Cost estimates and treatment information shown above are based on national averages in the United States and are for informational purposes only. Actual costs vary significantly based on geographic location, provider, case complexity, and insurance coverage. This comparison is not a substitute for professional dental advice. Always consult your dentist to determine the best option for your individual needs. Read our full Medical Disclaimer.