Philips Sonicare DiamondClean Smart Electric Toothbrush Review

philips sonicare diamondclean

The Philips Sonicare DiamondClean Smart toothbrush provides the ultimate cleaning experience and total protection. As a leading innovator in teeth-cleaning technology, Sonicare uses real time feedback and personalized coaching to make the brushing experience interactive and effective. With its tailored modes and multiple brush heads, Sonicare DiamondClean gives users a complete oral care package for gum health, fresh breath, plaque removal, and whitening (view on Amazon).

With electric toothbrush companies vying for superior technology, it can be hard to know where to turn when it comes to selecting a reliable and effective long-term toothbrush. In fact, the wrong brush can compromise your oral hygiene and outweigh the cost of purchase.

This Sonicare DiamondClean Smart review is here to help.

Sonicare DiamondClean Smart Performance

  • 31,000 brush strokes per minute for a cleaner mouth.
  • 4 clean modes with three intensity levels for a customizable brushing experience.
  • Also removes up to 100% more stains than a manual toothbrush (in White+ mode).

How does the Sonicare DiamondClean toothbrush work?

Philips is known for its unique sonic technology, which produces up to 31,000 brush strokes per minute to provide a deeper clean than manual toothbrushes. Along with this, the brush’s speed also drives fluid between the teeth, resulting in ‘non-contact’ brushing and a more effective cleaning routine. Its modes also cater to whitening, gum care, and plaque control, so your problem areas can receive the attention they need.

What’s in the box?

The standard Sonicare DiamondClean Smart toothbrush comes with:

  • 1 DiamondClean Smart handle.
  • 4 Premium brush heads (plaque control, gum care, tongue care, and white).
  • 1 Premium travel case.
  • 1 glass charger.
  • Free app (download available for iOS or Android).

Sonicare DiamondClean Smart toothbrush options

The Sonicare DiamondClean Smart toothbrush is available in the following color options:

  • Black HX9903/11
  • Grey HX9903/41
  • Pink HX9903/21
  • Rose Gold HX9903/61
  • White HX9903/01
  • Lunar Blue HX9957/51

-> See all color options now

As with all Sonicare models, toothbrush replacement heads are also available separately.

Key features of the Sonicare DiamondClean Smart toothbrush

Features Sonicare DiamondClean Smart
Brush per minute 31,000
Brushing mode 5 clean modes
Battery life 2 weeks
Charging options Glass charger
Brush head replacements 1 Premium plaque control brush head, 1 Premium gum care brush head, 1 Premium white brush head, 1 TongueCare+ brush head.
Pressure sensor
Feedback app

Sonicare DiamondClean Smart toothbrush pros and cons


  • 5 unique cleaning modes for tailored brushing.
  • 31,000 brush strokes per minute for advanced cleaning.
  • Removes up to 100% more stains than a manual brush due to its sonic technology.


  • More costly than other models (see latest price).
  • Less battery life than other Sonicare brushes.
  • Less suited to those looking for a no-frills design.

8 key features unpacked

1.) Brush per minute

Because of its sonic technology, which produces up to 31,000 brush strokes per minute, the DiamondClean Smart toothbrush drives fluid between the teeth. Importantly, this results in more plaque removal than a manual or rotary toothbrush. This action is what makes a sonic toothbrush, and also means a more thorough clean than other electric brushes.

2.) Brushing mode

The Sonicare DiamondClean Smart toothbrush has 5 unique cleaning modes, which are as follows:

  1. Clean.
  2. White+.
  3. Deep Clean+.
  4. Gum Health.
  5. TongueCare.

These modes help you to customize the brushing experience according to your own needs and preferences. It also means a more ‘total package’ experience than other 1-mode toothbrushes.

3.) Smartimer

Like most Sonicare models, the DiamondClean Smart toothbrush uses the standard Smartimer, which alerts users to the end of their brushing time by shutting off after the recommended 2 minutes of brushing.

4.) Battery life

With its 2-week battery life, the DiamondClean Smart toothbrush has a shorter battery life than other Sonicare models. However, this is also the average for other brands like Oral-B and is fairly typical for the amount of brushing modes.

5.) Charging options

The glass charger is a sleek feature of the more advanced Sonicare models. It also functions as a rinsing glass and is designed to suit any bathroom design (see details).

6.) Brush head replacements

The Sonicare DiamondClean Smart toothbrush has 4 brush head replacements: premium plaque control, gum care, tongue care, and white. This allows users to trial more than one brush head before deciding which ones to purchase again.

7.) Pressure sensor

This brush also includes a pressure sensor which alerts users when they are brushing too roughly. This helps to protect the teeth and gums from enamel damage and bleeding.

8.) Feedback app

The Sonicare DiamondClean Smart toothbrush app is a free app for tailored feedback on your brushing habits. This helps you to develop an effective oral hygiene routine and discover which areas you are missing.

How does the Sonicare DiamondClean Smart toothbrush compare?

It is worth noting that the following Sonicare products all include the standard Smartimer.

Features DiamondClean Smart Essence+ DiamondClean
Brush per minute 31,000 31,000 62,000
Brushing mode Clean, White+, DeepClean +, Gum Health, TongueCare. Clean. Clean, White, Polish, Gum Care, Sensitive.
Battery life 2 weeks 10 days 3 weeks
Charging options Glass charger Charger base Travel charger
Brush head replacements 1 Premium plaque control brush head, 1 Premium gum care brush head, 1 Premium white brush head. 1 SimplyClean standard brush head. 2 DiamondClean brush heads.
Pressure sensor x x
Feedback app x x
See details View View View

Who is the DiamondClean Smart toothbrush suitable for?

  • Those looking for a customizable brushing experience.
  • Those accustomed to electric brushes.
  • Those wishing to whiten their teeth or target certain problem areas.

However the Sonicare DiamondClean Smart toothbrush is less suited to those looking for a no-frills design or those who are new to electric toothbrushes. For a simpler option, try the Easy Clean, which has 1 cleaning mode. Because of its larger price range, it is also less suitable for those on a budget.

Reliability and long term use

While Sonicare enjoys a long immediate battery life, its longevity is often criticized as most brushes last 1-2 years. Still, many opt to use Sonicare because it is a highly reputable toothbrush brand and is trusted among dental professionals.

However, it is worth noting that the correct use of Sonicare products is important. Sonicare recommends charging your brush for the first 24 hours before use and to avoid leaving it on charge at all times in the future.

How to use the Sonicare DiamondClean Smart toothbrush

  1. Firstly, apply a pea-sized amount of toothpaste to the brush head.
  2. Wet the toothbrush with cold water.
  3. Angle the brush towards the gum line and turn ‘on’.
  4. Adjust cleaning mode if needed.
  5. Glide the brush slowly along teeth and gumline.

Sonicare DiamondClean Smart warranty and customer support

Like most Sonicare products, the DiamondClean Smart has a 2-year warranty. If you run into trouble using this toothbrush, it is also important to consider support options.

Phone: 1-800-682-7664



This product has many reviews on Amazon and is generally considered to be one of Sonicare’s best toothbrushes.


In short, the Sonicare DiamondClean Smart toothbrush is great for those looking for advanced and customizable cleaning modes. It is also unique in that each mode has adjustable intensity settings. While the DiamondClean Smart is not ideal for those new to electric brushes, it does offer a low intensity option for those who are still adjusting.

The DiamondClean Smart toothbrush also includes a generous package of brush head replacements, charger, and travel case. The diverse selection of accessories means users can trial additional products before committing to them long term. Of Sonicare’s most popular models, the DiamondClean Smart is particularly diverse in its selection of cleaning modes and adjustable settings.

Frequently asked questions

Can I use other brush heads with this model?

Yes; all of Sonicare’s snap-on brush heads are compatible with this model.

What is the difference between each cleaning mode?

Each cleaning mode is designed with a particular target area/goal in mind. For example, the Gum Health mode is designed for cleaning and protecting the gum area and sets the Smartimer at 3 minutes 20 seconds rather than the standard 2-minute cleaning mode. This is because the mode requires more time to thorough clean the gums. In contrast, modes like TongueCare are significantly shorter.

How do I change the intensity settings?

You can change the intensity settings manually on the side of the brush handle. The icons will show varying options of intensity which you can choose from.

Is the brush waterproof?

All Sonicare brushes are waterproof. However, it is not recommended to immerse them fully in water as this can harbour bacteria.

Does this version include a pressure sensor?

Yes; this model uses the pressure sensor to let you know when you are brushing too hard.

Can I wash the handle?

Yes; the handle can be washed, but you should ensure that it is well-dried afterwards.

Can I use this with the Sonicare kids app?

No; this model can only be used with its own app.

Can I only use the brush with the app?

No; while the app is helpful and intended to improve your brushing routine, it is not essential.

What is the difference between each brush head?

Each brush head is carefully designed to suit its mode and the bristles are shaped accordingly. For example, the TongueCare brush head has a flat design suited to scraping.

Can I buy a spare handle?

No; Sonicare does not sell handles separately.

Size dimensions

  • 4.4 x 6.8 x 9.9 inches
  • 2.31 pounds

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