Key Features
Superior Stain Removal Technology
Five Specialised Cleaning Modes
Premium Charging Glass & Travel Case
Pros & Cons
Smart sensors provide real-time brushing feedback
Complete set of specialised brush heads included
Premium design with elegant charging glass
High price point
App features require learning curve
Product Summary
As a dentist, I often recommend the Philips Sonicare DiamondClean Smart for patients looking to brighten their smile. Let me be clear: no toothbrush can change the intrinsic color of your teeth or match the results of professional whitening treatments. However, this model is exceptional at removing external stains from coffee, tea, wine, and tobacco.
The DiamondClean Smart uses powerful sonic technology that delivers 60,000+ brush movements per minute, effectively polishing away surface stains. When used with the specialized A3 Premium All-in-One brush head, patients typically see noticeable improvement in just a few days. The dedicated White+ mode optimizes this stain-fighting capability, working like a gentle dental polisher to restore your teeth’s natural brightness.
I particularly appreciate the pressure sensor that illuminates when you’re brushing too hard. This is crucial for whitening because aggressive brushing can damage gums, causing them to recede and expose the yellower root surfaces—ironically making teeth appear less white over time.
One important caution I give all my patients: never use this or any toothbrush immediately after consuming acidic foods or beverages like orange juice, wine, or soda. Wait at least 30 minutes, as brushing softened enamel can permanently remove it, revealing the yellower dentine beneath.
When used properly, the DiamondClean Smart provides consistent, gentle polishing that gradually restores your natural tooth brightness while protecting your enamel.
Cleaning Score: 
4.5/5
Value for Money: 3/5
For further information on professional and at-home teeth whitening solutions, see our guide on Teeth Whitening Cost.
