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Philips Sonicare DiamondClean Smart 9300Rechargeable Toothbrush

HX9903/45

HX992S

Available in

Complete care for your oral health
Advanced sonic toothbrush for improved oral health: achieve up to 20x more plaque removal¹, up to 15x healthier gums¹, and remove up to 100% more stains than a manual toothbrush.
See all benefits

Gently removes up to 20x more plaque*

Complete care for your oral health

  • 20x more plaque removal*

  • Up to 15x healthier gums**

  • Visual pressure sensor

  • 4 modes & 3 intensities

20x more effective on plaque*, gentle on gums

20x more effective on plaque*, gentle on gums

Everyone cleans differently, so we designed this brush head with multi-angle bristles to keep plaque removal on course no matter your technique. Our All-in-One A3 brush head delivers our best cleaning and removes up to 20x more plaque, 15x healthier gums in six weeks, and up to 100% more stain removal in less than two days versus a manual toothbrush.

Sonicare Fluid Action

Sonicare Fluid Action

Philips Sonicare toothbrushes clean gently yet effectively and care for your teeth and gums with 62,000 bristle movements per minute. Sonicare Fluid Action supports the bristles to clean by driving fluid deep between teeth and along the gumline.

Help protect your gums with our pressure sensor

Help protect your gums with our pressure sensor

This Sonicare electric toothbrush has a light ring at its base that gently lets you know if you're overdoing the pressure. Simply ease off when it lights up to help your gums stay protected.

Technical Specifications

Parts & Accessories

Reviews

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Customer opinions in the form of product and star ratings are useful for all customers. They allow you to learn more about the product and help you make a purchase decision. Any customer who has purchased a product online or in store can submit a review

3.5

of 5


163

Reviews


03/05/2026

Canada

Canada

Verified buyer

Greatest product

We’ve been using Philips sonic toothbrudh sending one. We love it.

This review was made for DiamondClean Smart 9300 HX9903/45 Rechargeable Toothbrush

Date of Use 2026-03-01

This review was made for DiamondClean Smart 9300 HX9903/45 Rechargeable Toothbrush

Date of Use 2026-03-01

23/04/2024

Canada

Canada

Verified buyer

Put a smile on your Hygenist's face!

Do you want to put a smile on your dentist and your hygienist's face? Go no further...attack your mouth with this amazing rechargeable toothbrush! You will not be disappointed. I've been using the SONICARE for over 25 years!

Pros

Love the iphone APP that goes along with this It let's you know if you are brushing with too much pressure.. Rechargeable.Love the pulse feature.

Cons

None

Yes, I recommend this product

This review was made for DiamondClean Smart 9300 HX9903/15 Rechargeable Toothbrush

Yes, I recommend this product

This review was made for DiamondClean Smart 9300 HX9903/15 Rechargeable Toothbrush

23/06/2026

US

US

Verified buyer

A toothbrush supports Periodontal Disaease

The DiamondClean Smart 9300 has truly impressed me with its powerful cleaning performance. Its C3 replacement brush head removes plaque effectively and leaves no residue on my teeth. The adjustable cleaning modes are well designed and easy to use, making daily brushing simple and comfortable. Because I have been diagnosed with periodontal disease, this electric toothbrush has been a real benefit to my oral‑health routine. I highly recommend the DiamondClean Smart 9300 for anyone managing periodontal disease and seeking a deeper, more effective clean.

Pros

The pros of this toothbrush include its ability to remove plaque without leaving any residue. It also provides a thorough gum massage, especially when switched to the deep‑cleaning mode. Overall, it offers a true benefit to maintaining strong dental needs

Cons

The main drawback is needing to purchase replacement brush heads in less than a month, depending on how extensively the toothbrush is used.

Yes, I recommend this product

This review was made for DiamondClean Smart 9300 HX9903/15 Rechargeable Toothbrush

Date of Use 2026-05-15

Yes, I recommend this product

This review was made for DiamondClean Smart 9300 HX9903/15 Rechargeable Toothbrush

Date of Use 2026-05-15

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Disclaimers
  1. vs. a manual toothbrush.

  2. in 6 weeks vs. a manual toothbrush.

  3. in less than 2 days vs. a manual toothbrush.