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Customer Ratings & Reviews

Your price for this item is $179.99
The comparable value price is $229.99

Customer reviews

Rating 4.5 out of 5 stars with 86 reviews

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Rating by feature

  • Value

    Rating 4.2 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

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Cons mentioned filter

92%would recommend to a friend

Customers are saying

Customers often highlight the excellent cleaning ability and long battery life of the DiamondClean Smart Electric Toothbrush. Many appreciate the multiple brush heads included for varied cleaning needs and find the toothbrush easy to use, with the app adding helpful guidance. However, some users express dissatisfaction with the travel case, citing concerns about its durability and closure mechanism. The pressure sensor is also a frequently mentioned positive feature, helping users brush more effectively.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 5 Showing 81-86 of 86 reviews
  • Pros mentioned:
    Brush head
    Tech Insider Network Member

    Rated 5 out of 5 stars

    Great toothbrush!

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    Tech Insider Network Member
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Review for Philips Sonicare DiamondClean Smart 9300 Black I’ve been using Philips electric toothbrushes for over 15 years now, and my visits to the dentist have shown me how well they work. My hygienist *always* comments on how good my teeth look and how good my “self care” is. I haven’t had a cavity in all that time. Alas, nothing lasts forever, so when I had to replace my older Philips toothbrush, I chose the DiamondClean Smart 9300. It has all the features I’ve known and loved for years, plus some new ones. It comes with two different brush heads - a plaque fighting and whitening head and a premium brush that also aids in gum care. The toothbrush handle recognizes the type of brush you put on it and adjusts its motion accordingly. New for me is the brushing feedback app. I thought after (many) decades of brushing my teeth, there was not a lot that an app could teach me about getting my teeth clean, but I was wrong! The app pointed out areas that I was neglecting because I use only my right hand to hold the toothbrush. When I switched hands as I switched sides in my mouth, I actually improved my technique. I’ve been told by my dentist to use a soft brush and not to press too hard when I brush. The DiamondClean 9300 helps with both. The brushes are all considered “soft” and the handle detects if you are using too much pressure by giving a little “buzz” feedback that you can feel and a light on the bottom of the handle that you can see. It’s easy to know when your you’re using too much force. Although the 9300 has a two year warranty, I’ve found they last considerably longer. Some years ago, I had one that failed within the warranty period, and I was very happy with the Customer Service at Philips. They were polite, professional, and immediately sent me a replacement via FedEx.

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning performance
    Tech Insider Network Member

    Rated 5 out of 5 stars

    High-quality electric toothbrush

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    Tech Insider Network Member
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The Philips Sonicare DiamondClean Smart 9300 Rechargeable Electric Toothbrush is a high-quality electric toothbrush that is packed with features that have really improved my oral health. In the past, I used to rush through brushing in an attempt to just get it over with which is obviously not the best way to maintain healthy teeth and gums. I’ve never had a cavity before so I figured I was doing good enough, but this Philips Sonicare Smart 9300 toothbrush has really shown me that I can be doing a much better job and I have really noticed the results by taking my time and following along with the app for a much more effective cleaning experience. The microchip in the brush heads allow the toothbrush to send data directly to my phone for personalized feedback and coaching during each brushing session. I had a lot to work on the first few times I used this new toothbrush but over time, I have gotten more used to the proper way to brush and I feel like it has helped improve my oral health tremendously. I don’t know if it’s all just in my head but my teeth just seem to look and feel so much better than they did after brushing in the past with my old electric toothbrush. Either way, I know my teeth are well taken care of now. One of the other cool things I really like about this Philips Sonicare Smart 9300 toothbrush is the charging glass. It is very stylish and comes in handy for rinsing while also effortlessly charging the toothbrush. The travel case that comes in the package is also a very nice feature since it makes it easy to transport the toothbrush and brush heads when travelling. Overall, the Philips Sonicare DiamondClean Smart 9300 Rechargeable Electric Toothbrush is great high-quality electric toothbrush and I highly recommend it!

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning performance
    Tech Insider Network Member

    Rated 5 out of 5 stars

    Smart features that can encourage better brushing

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    Tech Insider Network Member
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I’ve used the basic Sonicare toothbrushes for many years. They have been reliable and long lasting while also being good at what they are made for - brushing teeth. This 9300 series brush adds some genuinely useful smart features while being a more premium product overall than the basic Sonicare brushes I have used in the past. In the box you will find the brush with two heads, a travel case, and a customizable charging “cup”. You can place the brush in the cup or customize it to be more like a stand. The cup/stand piece is washable to keep it clean. The travel case is very premium feeling. The actual brushing experience is exactly as I expected from being accustomed to previous Sonicare brushes. The sonic vibration works just the same and your teeth end up feeling very thoroughly cleaned. The real significant features with this toothbrush come with the Bluetooth and app functionality. I downloaded the Sonicare app and my phone immediately detected the brush. Here, you can keep track of how often and how long you brush, and there is also a clean feature where you can see which teeth you may have missed. This is genuinely useful, as it keeps you on track to brush evenly throughout. It also tells you if you’re moving too fast or putting too much pressure on the teeth. Overall the smart features are easy to use and are genuinely useful, and certainly can help a person maintain better dental health.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Must buy!

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great toothbrush. Has many setting for a clean brush.

    I would recommend this to a friend
  • Cons mentioned:
    Travel case

    Rated 5 out of 5 stars

    Great toothbrush

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Toothbrush is great. Wish the carrying case included charging as in previous versions.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    2 year life

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The brush died after 2 years. The button seemed to need to be pressed a couple of times before turning on for about a week. Then it just died. For the amount of money I spent on this my toothbrush should last at least 5 yrs. Very upset bc this was an investment gone to waste.

    No, I would not recommend this to a friend
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