Royal Philips has introduced the Philips Sonicare Next-Generation DiamondClean 9900 Prestige, an electric toothbrush that incorporates artificial intelligence and real-time feedback to help users improve brushing technique between dental visits.
The company says the new device is designed to provide users with immediate guidance on brushing coverage, pressure, and motion through integrated sensors and on-device AI. Philips noted that more than one-third of people remain uncertain whether they are brushing effectively between dental appointments, despite the recognized relationship between oral health and overall systemic health.
According to Philips, the DiamondClean 9900 Prestige builds on more than 30 years of Sonicare development and removes up to 20 times more plaque than a manual toothbrush.
“Philips Sonicare is opening a new era of oral care by making the invisible visible,” said Francesco Grillo, Philips Global Business Unit Leader – Oral Healthcare. “For decades, people have been told how to brush better, yet most never truly knew how well they were brushing. With our Next-Generation DiamondClean 9900 Prestige, we fundamentally reimagined the brushing experience by combining advanced sensing, real-time guidance and AI-powered personalization directly within the toothbrush itself. The result is a simpler, more intuitive and more effective way to help people build healthier habits and achieve better oral health outcomes every day.”
Among the device's new features is a 12-segment on-device "Mouth Map" that provides visual feedback on areas that may have been missed during brushing. A light-ring guidance system displays brushing coverage, pressure, and scrubbing behavior in real time, while integrated SenseIQ pressure sensors automatically adjust brushing intensity when excessive force is detected. Users can also select from eight brushing modes, three intensity settings, and different feedback preferences.
The toothbrush uses Sonicare's fluid-action technology to promote plaque removal along the gingival margin and interproximally. It is powered by the company's next-generation sonic drivetrain, introduced earlier this year in the Sonicare 5000-7000 Series, which Philips says provides quieter operation while maintaining cleaning performance.
“Too many people still rely on manual brushing routines that can leave up to 50% of bacterial plaque behind, especially overnight when bacteria can grow undisturbed,” said Matina Vidalis, Senior Marketing Director – Oral Healthcare, Philips Personal Health North America. “Addressing this oral health gap has shaped everything we’re doing this year, from reimagining World Oral Health Day as ‘World Oral Health Night’ to re-launching our newly redesigned Sonicare portfolio in a single year. With the Next-Generation DiamondClean 9900 Prestige, we’re redefining what daily oral care routines look and feel like, helping remove the guesswork from brushing through visual guidance, personalized care, and premium design, giving consumers greater confidence that their daily routines are truly working.”
Philips also highlighted design updates intended to improve product sustainability, including a battery enclosure designed for repairability and paper-based packaging. Brush heads in the Sonicare line are manufactured with 70% bio-based plastic, according to the company.
The DiamondClean 9900 Prestige is part of the new Sonicare DiamondClean 8000-9000 range, which follows the introduction earlier this year of the Sonicare 5000-7000 Series featuring updated sonic technology, redesigned hardware, and expanded product options.
The Philips Sonicare Next-Generation DiamondClean 9900 Prestige is expected to be available through Amazon beginning in September 2026.
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Philips Sonicare Next-Generation DiamondClean 9900 Prestige
