Buyer question · Braces & orthodontics

Can you use the Waterpik Aquarius WP-660 water flosser with braces?

By Smoov Discovery · Updated November 2, 2026

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Waterpik White Aquarius Water Flosser WP-660

Our pick

Waterpik Aquarius Water Flosser WP-660, White

White
Orthodontic tip included7 tips in the box10 pressure settingsADA Accepted
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Short answer

Yes. Waterpik's White Aquarius Water Flosser (WP-660) comes with an Orthodontic tip (OD-100E), and Waterpik says that, used with that tip, it is clinically shown to be up to 3X as effective for removing plaque around braces vs. brushing and string floss. Waterpik says the tip's tapered brush helps remove hard-to-reach plaque around brackets and wires.

At a glance

Best for

  • People with braces who want the Orthodontic tip in the box
  • Anyone who wants to start at a low pressure and work up, with 10 settings
  • Households in North America with a countertop spot near an outlet

Skip it if

  • You need a cordless or travel flosser: the WP-660 is corded and for 120VAC/60Hz outlets in North America only

What we like

  • Orthodontic tip (OD-100E) included, plus 4 Precision tips, a Pik Pocket tip and a Plaque Seeker tip
  • Waterpik's braces claim: up to 3X as effective for removing plaque around braces vs. brushing and string floss, with the Orthodontic tip
  • 10 pressure settings and 2 modes: Floss and Hydro-Pulse Massage
  • 1-minute timer with 30-second pacer

Good to know

  • Waterpik lists the Orthodontic tip's replacement interval as every 3 months
  • The manual says not to use it for more than 5 minutes in each two-hour period; it shuts off automatically after 5 minutes of continuous use
  • Corded, with a 52-inch cord

Why the WP-660 works for braces

The braces tip is in the box

Waterpik lists one OD-100E Orthodontic Tip among the 7 tips that come with the WP-660, and the Orthodontic tip page names the Aquarius WP-660 as a compatible model.

A braces claim tied to that tip

Waterpik says the Aquarius is clinically shown to be up to 3X as effective for removing plaque around braces vs. brushing and string floss when using the Orthodontic tip.

A brush made for brackets and wires

Waterpik says the Orthodontic tip's tapered brush helps remove hard-to-reach plaque around orthodontic brackets and wires. Its braces guide says the Precision tip, which comes 4 to a box here, is also effective.

Start low, then adjust

The WP-660 has 10 pressure settings. Waterpik's manual says to use the lowest setting for first-time use and increase gradually to the setting you prefer, or as your dental professional instructs.

A closer look

White Aquarius countertop water flosser with its flossing tips
White Aquarius countertop water flosser with its flossing tips. Image: Waterpik (waterpik.com).

How to use it

  1. Fill the reservoir with lukewarm water and place it firmly on the base.
  2. Press the Orthodontic tip down firmly into the handle until it clicks into place.
  3. Set the pressure low (setting 1 for first-time use), lean over the sink and place the tip in your mouth before turning the water on.
  4. Close your lips enough to prevent splashing and let the water flow from your mouth into the sink.
  5. Starting with the back teeth, aim the tip at the gumline and glide it along, pausing to lightly brush between the teeth and all around each bracket or appliance.
  6. Move on to the next tooth, working toward the front teeth; the unit pauses briefly at 30 seconds as a reminder to switch to the other arch.

Steps combine Waterpik's 'How to floss with braces' guide, its Orthodontic tip instructions and the WP-600 series owner's manual, in Waterpik's order.

Key details

Model
WP-660 (White)
Tips included
4 Precision (JT-100E), 1 Orthodontic (OD-100E), 1 Pik Pocket (PP-100E), 1 Plaque Seeker (PS-100E)
Pressure settings
10
Modes
Floss, Hydro-Pulse Massage
Timer
1-minute timer with 30-second pacer
Reservoir
22 oz (651 ml)
Pulses per minute
1,400
Flow rate
13 oz (384 ml) per minute
Size
10.35 in high; base 4.70 in wide, 3.80 in deep
Unit weight
1.46 lb
Power
Corded, 120VAC/60Hz, North America only; 52-inch cord
Warranty
Three-year limited warranty (see Owners Manual)

From the maker

Do not use this product for more than 5 minutes in each two-hour period.

Do not direct water under the tongue, into the ear, nose or other delicate areas.

Do not use if you have an open wound on your tongue or in your mouth.

Remove any oral jewelry prior to use of this product.

Children should be supervised to ensure that they do not play with the appliance.

Questions buyers ask

Which tip should I use with braces?

Waterpik's braces guide says that for best results you use a Waterpik water flosser with the Orthodontic tip, and that the Precision tip is also effective. The WP-660 comes with both.

What pressure setting should I start on?

Waterpik's manual says to use the lowest setting (No. 1) for first-time use, then gradually increase to the setting you prefer or as your dental professional instructs.

How often do I replace the Orthodontic tip?

Waterpik lists the Orthodontic tip's replacement interval as every 3 months.

Is the WP-660 ADA Accepted?

Waterpik says the Aquarius water flosser is accepted by the American Dental Association (ADA) for safety and effectiveness.

How big is the water reservoir?

Waterpik lists the reservoir as 22 oz (651 ml), and its spec table lists a capacity of 90 seconds.

How do I clean the reservoir?

Waterpik's manual says the reservoir is removable for easy cleaning and is top rack dishwasher safe.

The bottom line

Yes: the WP-660 ships with Waterpik's Orthodontic tip, which Waterpik makes for brackets and wires, and Waterpik ties its braces plaque claim to that tip. Start at the lowest of its 10 settings and follow Waterpik's braces technique.

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How this page was made

Smoov Discovery wrote this page from the maker's own product information and retailer copy, listed below. We did not test the product ourselves. Nothing here comes from Amazon.

Sources

Photos: Waterpik (waterpik.com).

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