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Philips’ new smart toothbrush shows you where you didn’t properly brush
Philips has unveiled the Sonicare Next-Generation DiamondClean 9900 Prestige, a smart electric toothbrush that uses artificial intelligence to give users real-time feedback on their brushing technique and flag areas of the mouth that need more attention. The device aims to remove guesswork from oral hygiene by combining sensor tracking with a touchscreen interface, part of Philips' ongoing push to add smart features to its Sonicare range.
The toothbrush uses a third-generation AI model to track its movement in the mouth, displaying a "mouth map" on its touchscreen that divides the teeth and gums into 12 segments, highlighted in blue or orange to show how thoroughly each area was cleaned. A glowing ring on the base changes colour to warn against excessive pressure, backed by pressure sensors that automatically soften the brushing intensity, while the touchscreen offers eight cleaning modes including gum health and sensitive settings. It is expected to launch in Europe and the US this autumn, with a broader global rollout in 2027; pricing has not been confirmed, though previous Sonicare models have retailed at around $430, suggesting this model will cost more.
In short
- Philips' new Sonicare toothbrush uses AI to guide better brushing.
- A touchscreen "mouth map" highlights poorly cleaned areas.
- Launching in Europe and the US this autumn, priced above $430.
Steelman: both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
The smart toothbrush addresses a genuine healthcare gap. Research shows most people brush inadequately, missing areas that lead to cavities and gum disease. Real-time feedback that teaches correct technique could significantly improve oral health outcomes and reduce expensive dental interventions. For people with limited dexterity or those learning proper hygiene, the AI guidance provides measurable benefit that justifies the investment, similar to how people spend on other health-monitoring devices.
The case against
This represents unnecessary technological complexity grafted onto a straightforward hygiene task that has been successfully accomplished for decades without artificial intelligence. The premium pricing—likely £350 or more—is difficult to justify when traditional electric toothbrushes work effectively at a fraction of the cost, backed by simple, proven education about brushing technique. Beyond cost concerns, introducing a connected device in one's bathroom raises legitimate questions about data collection and privacy, whilst the environmental cost of manufacturing complex electronics for incremental health gains warrants scrutiny.
Explained simply
Electric toothbrushes use a powered brush head to clean teeth, but people still need to guide them around the mouth and give each area enough attention. Brushing too hard can also irritate gums, while missing areas may leave plaque behind.
Philips is a Dutch health technology company, and Sonicare is its range of electric toothbrushes. Its premium DiamondClean models combine brushing with features such as sensors and app or screen guidance; dentists’ advice on brushing technique remains important regardless of the device.
The new model’s mapping and pressure warnings are part of a wider move to add connected features to everyday health products. Its cost and availability may affect how many people can use those features, particularly compared with simpler toothbrushes.