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