Waterpik Aquarius WP-660 Review: A Clinically Proven Water Flosser for Comprehensive Oral Care

The Waterpik Aquarius WP-660 is a countertop water flosser with robust clinical backing for plaque removal and gum health, especially for those with braces or dental work. Its range of features and proven effectiveness make it a standout choice for daily oral hygiene.

Wellness
PG
Physical Glow Editorial Team
3 min read
Waterpik Aquarius Water Flosser WP-660 product packaging or device photograph

Physical Glow Verdict

The Waterpik Aquarius WP-660 stands out for its clinically proven effectiveness, especially for those with braces, implants, or other dental work. Its range of features, from multiple pressure settings to a generous reservoir and a variety of tips, make it a compelling choice for anyone serious about daily oral hygiene. The limitations are practical rather than performance-based, with the main considerations being its countertop format and voltage compatibility. For readers seeking a water flosser with robust evidence and versatile functionality, this model is a strong contender.

Oral hygiene is a daily commitment, and for many, traditional string flossing can feel tedious or ineffective—especially if you have braces, implants, or other dental work. The Waterpik Aquarius Water Flosser WP-660 positions itself as a solution for those seeking a more thorough and convenient approach to interdental cleaning. With strong clinical evidence supporting its efficacy, this device aims to address a broad spectrum of oral care needs.

What the Waterpik Aquarius WP-660 Is Designed For

Waterpik positions the Aquarius WP-660 as a countertop electric water flosser intended for daily oral hygiene, plaque removal, and gum health improvement. The device is also specifically recommended for people with braces, implants, crowns, bridges, and veneers—groups who often struggle with traditional flossing methods. According to the manufacturer, the device is suitable for addressing concerns such as gingivitis, bleeding gums, cavities, bad breath, and maintaining gum health around dental work.

Key Features and Specifications

The WP-660 features a pulsed water jet cleaning mechanism and utilizes Waterpik's PRECISIONPULSE technology, which combines water pressure and pulsations for effective cleaning. The unit offers 10 pressure settings, allowing users to tailor intensity to their comfort and needs. Its 22-ounce (651 ml) reservoir provides over 90 seconds of continuous use, and the device dispenses water at a rate of 13 ounces (384 ml) per minute with 1,400 pulses per minute. The package includes seven flossing tips and a handle that rotates 360 degrees for easier access to all areas of the mouth. Additional usability features include a one-minute timer with a 30-second pacer and an LED information panel. The WP-660 operates on corded electric power (120VAC/60Hz, North America only) and comes with a three-year limited warranty.

Clinical Evidence and Effectiveness

What distinguishes the Waterpik Aquarius WP-660 is the breadth and specificity of its clinical backing. Independent evidence confirms that this device is up to twice as effective as string floss for removing bacterial plaque and improving gum health. For people with implants, using the Plaque Seeker tip, it is also up to twice as effective as string floss for gum health around implants. For those with braces, the Orthodontic tip has been shown to be up to three times as effective for plaque removal compared to brushing and string floss. These findings are not just manufacturer claims but are supported by clinical testing, lending significant credibility to the product’s performance for users with complex oral care needs.

Practical Considerations and Usability

The WP-660 is designed for countertop use, which means it requires a dedicated space and access to a power outlet. The large reservoir supports longer cleaning sessions without frequent refills, and the included timer and pacer help ensure thorough coverage. The seven included tips offer versatility for different dental situations, but users should be aware that tips need to be replaced every three to six months for optimal performance. Monthly cleaning of the unit is also recommended. The device is relatively lightweight at 1.46 lbs (0.662 kg), but as a corded appliance, it is not portable.

Limitations and What Is Not Specified

While the Waterpik Aquarius WP-660 is supported by robust clinical evidence and a comprehensive feature set, there are some practical limitations. The device is only compatible with North American voltage (120VAC/60Hz), which may be a consideration for international users. The product is designed for use with water and does not specify compatibility with other rinsing agents. Additionally, while the clinical evidence is strong for plaque removal and gum health, the full ingredient list for any included tips or components is not specified.

Pros

  • Clinically proven to be more effective than string floss for plaque removal and gum health
  • Specifically effective for people with braces and implants
  • Offers 10 pressure settings and multiple cleaning modes
  • Includes seven flossing tips for different needs
  • Large reservoir allows for extended use
  • Backed by a three-year limited warranty

Frequently asked questions

Is the Waterpik Aquarius WP-660 effective for people with braces?
Yes, clinical evidence shows it can be up to three times as effective as brushing and string floss for removing plaque around braces when using the Orthodontic tip.
How many pressure settings does the WP-660 have?
The device offers 10 adjustable pressure settings.
What is the reservoir capacity?
The reservoir holds 22 ounces (651 ml) of water, providing over 90 seconds of use.
Is the WP-660 portable?
No, it is a corded countertop device designed for stationary use.
What warranty does the WP-660 include?
It comes with a three-year limited warranty.

PG

Physical Glow Editorial Team

Editorial reviewer

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