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Why Oral-B

How to Use Water Flossers

10minute read

Last updated 06/2025

Dr. Robert Lee, a dental professional with 35 years of experience.

This blog has been reviewed and approved by Dr Robert Lee, a dental professional of 35 years

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  • Contents

  • The Importance of Using a Water Flosser
  • What Is a Water Flosser?
  • How to Use a Water Flosser
  • FAQs

The Importance of Using a Water Flosser

We all understand the importance of brushing your teeth daily. It's also important to floss as well, to reach stubborn tartar and leftover food between teeth that can cause gum problems. Daily dental flossing can prevent that from happening. A water flosser, also known as an oral irrigator, can also be a great addition to your flossing routine.

What Is a Water Flosser?

A water flosser is an oral irrigation device that directs a stream of water between your teeth and gums, removing food debris, plaque and bacteria. Combined with daily flossing, an oral irrigator enhances your daily oral routine. Plus, it's a gentle yet effective way to clean crowns, braces, bridges, and dental implants. Learn how to use water flosser with braces.

Oral-B Water Flosser Advanced Cordless Irrigator image

Benefits of Water Flossers

Water flossing should never be used as a substitute for regular brushing and flossing, but it is a great supplement to your daily routine. Water flossers are a gentle yet effective way to clean dental work such as crowns, braces, and dental implants. Additional water flosser benefits include removing more plaque and food debris form between teeth than string floss alone.

How to Use a Water Flosser

Using a water flosser like the Oral-B Water Flosser Advanced Cordless Irrigator, before brushing and flossing can loosen leftover food, making it easier to remove later using string floss. Used after brushing and flossing, a water flosser can wash away remaining food in hard-to-reach places. The Oral-B Water Flosser also takes your clean to the next level-targeting and helping eliminate plaque bacteria** below the gum line helping to keep gums healthy. It's very easy to use. Just follow these simple steps:

  1. Supply the water source - This may mean connecting it to the water tap or filling the reservoir with lukewarm water.
  2. Placement - Place the nozzle in your mouth and, starting with your molars, hold the irrigator away from your teeth and gums rather than directly against them. You may want to lean over the sink now, so you don't splash water on your countertop when you turn it on.
  3. Select pressure setting and turn on - There will be either an on-button or a dial that adjusts the water pressure. Start with the lowest pressure setting and work your way up. Make sure the pressure is high but comfortable. You can close your lips to prevent the water splashing but be sure to allow the water to drain out into the sink.
  4. Follow gum line - Going tooth-by-tooth, direct the water at your gum line and areas between teeth. Aim for the top of the tooth, baseline of the gum, and the space between each tooth. Hold the water over each tooth for about two seconds, repeating the process on the inside and outside of your teeth until your whole mouth is treated. It should take you about two minutes to complete.
  5. Empty the reservoir - Once you're done, turn off the device, remove the nozzle and drain the remaining water. Leaving stale water in your reservoir can cause bacteria to grow.
  6. Clean your device - Remember to rinse your water flosser's reservoir after every session, to ensure it is hygienic. Learn how to clean your water flosser

Be sure to follow a complete oral care routine to get the most out of your Oral-B Water Flosser:

  • Brush at least twice a day or after meals with an electric toothbrush like the Oral-B iO Series to remove up to 100% more plaque than a regular manual.
  • Floss at least once every day with string floss and supplement it with the Oral-B Water Flosser to further clean away any leftover plaque bacteria and food particles.
  • See your dental professional once every 6 months for professional cleanings and checkups.

Only from Oral-B, the #1 brand used by dentists worldwide*.

*BASED ON SURVEYS OF A REPRESENTATIVE WORLDWIDE SAMPLE OF DENTISTS CARRIED OUT FOR P&G REGULARLY

**Helps reduce plaque bacteria and inflammatory components associated with gingivitis, when used as an adjunct to brushing, flossing and regular professional care.

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FAQs

Do I use the water flosser before or after brushing my teeth?

A water flosser can be a helpful addition to brushing and string flossing, especially for cleaning around braces, dental work, or hard-to-reach areas. You can use it before or after brushing and flossing based on your routine and product directions. It should not replace twice-daily brushing with fluoride toothpaste or daily cleaning between teeth with floss or another interdental cleaner.

Should I use warm water or cold water in my Oral-B water flosser?

It is recommended to fill the water flosser reservoir with lukewarm water.

What is the correct angle to hold a water flosser tip against the gum line?

To properly use a water flosser, work on one tooth at a time by aiming the water along the gum line and between each tooth. Focus on the top surface of the tooth, where the gum begins, and the area between teeth. Hold the water for about two seconds per tooth, then move to clean both the inner and outer surfaces until your entire mouth has been treated. The entire routine should take roughly two minutes.

How long should I spend water flossing my entire mouth?

Using a water flosser for your whole mouth often takes about two minutes, but timing can vary by product and your routine. Follow your water flosser’s instructions and your dentist’s or orthodontist’s guidance for best results.

Can I use a water flosser if I have braces or permanent retainers?

Yes, you can use a water flosser if you have braces or permanent retainers. In fact, many people find water flossers especially helpful in these situations, as they can more effectively dislodge food particles and plaque from around brackets, wires, and retainer fixtures—areas that can be difficult to clean with traditional string floss. Be sure to follow your orthodontist’s or dentist's recommendations on technique and additional oral care practices to ensure your entire mouth is properly maintained.