Wednesday, October 12, 2022

The Best Dentist Approved, Inexpensive, 5-Mode Electric Toothbrush

I have been using Oral-B or Philips Sonicare ultrasonic toothbrushes for many years, at my dentist’s recommendation. In August, I replaced my old, expensive ultrasonic toothbrush with an excellent and surprisingly inexpensive model (from a lesser-known brand), which has smaller brush heads that fit into hard-to-reach areas, soft, rounded bristles that are gentle on my aging gums, and a choice of five brushing modes.

Even though my new sonic electric toothbrush had great customer reviews and was highly recommended by a well-known and respected YouTube influencer whose product recommendations I have come to trust, I was still a bit skeptical about the quality of such an inexpensive product. However, my oral health team was impressed with the state of my teeth and gums during my routine dental cleaning and checkup 10 days ago. I'm delighted that my new brush has been dental hygienist- and dentist-approved.

I'm excited to share my product review of this terrific electric toothbrush set, which comes with seven regular brush heads, an interdental brush head, and a fitted case for storage and travel and costs just $19.99 on Amazon as of October 12, 2023.

Note: The brand I purchased, Dnsly, is no longer available, but the TEETHEORY and Fairywill brands make nearly identical models with the same features.

Sonic Electric Toothbrush With Custom Travel Case, Protective Cover and 8 Brush Heads

Why This Sonic Electric Toothbrush Is a "Best Buy" For Savvy Consumers

Here are some of the key features that make this Sonic Electric Toothbrush Set With 8 Brush Heads and Travel Case a smart purchase.

40,000 VPM for Effective Cleaning and Plaque Removal

Although the American Dental Association says that both manual and electric toothbrushes can clean teeth effectively when using the correct brushing technique, clinical studies have shown that “electric toothbrushes, which combine ultrasonic and sonic (or acoustic and mechanic) actions, may have the most promising effect on good oral health” compared to manual toothbrushes.1 

It vibrates at up to 40,000 VPM (vibrations per minute), which is in the same ballpark as many ultrasonic toothbrush models from Philips Sonicare and Oral-B.

Digel, I., Kern, I., Geenen, E. M., & Akimbekov, N. (2020). Dental plaque removal by ultrasonic toothbrushes. Dentistry Journal, 8(1), 28.

Choice of Five Brushing Modes

There are five tiny LED lights down the front of the handle labeled W, C, S, P,   and M, respectively, that allow you to choose among the following brushing modes to customize your oral health care routine:

  • White mode (W): strong vibration helps whiten and brighten teeth by removing surface stains.
  • Clean mode (C): medium vibration for routine cleaning / twice-daily brushing.
  • Sensitive mode (S): gentle vibration for first-time electric toothbrush users or those with sensitive teeth and gums.
  • Polish mode (P): strong vibration/invert frequency helps polish and brighten teeth.
  • Massage mode (M): gentle vibration/invert frequency for gum massage and increased circulation to improve the health of your gums.
    • Note: I could not find any information on what "invert frequency" means (or does) in the context of electric toothbrushes.

Just press the large Power on/off button (inside the gold circle) repeatedly to cycle through the different modes. The nice thing is that it will remember the mode you used last and return to that setting automatically the next time you press the Power button. 

I have used the Clean, White, and Massage modes so far. I think the White mode is gentle enough for daily use, thanks to the soft, rounded bristles on the brush heads.

2-Minute Smart Timer With 30-Second Quadrant Reminders and Auto Shutoff

Most dentists recommend brushing your teeth for 2–3 minutes, or 30–45 seconds per quadrant. This sonic electric toothbrush pauses after each 30-second interval to let you know it's time to move on to the next quadrant, then shuts off automatically after two minutes.

7 Brush Heads and 1 Interdental Brush

The American Dental Association recommends that you replace toothbrushes, or brush heads for an electric toothbrush, every three to four months (or sooner, if the bristles are visibly frayed).

The brush heads have blue bristles at the top and bottom that, with use, gradually fade from blue to white as a helpful reminder to discard and replace the brush head.

I really like the smaller brush heads and the thin, pointed, interdental brush head with white bristles, since both make it easier to get into tight, hard-to-reach areas. The interdental brush is also great for cleaning around and in between dental braces.

The DuPont bristles with rounded tips are gentle on gums and enamel, which is another reason I decided to try this set.

30-Day Rechargeable Battery Life

A full charge, which takes 4 hours, lasts for about 30 days, based on brushing for two minutes twice a day.

USB Charging (Charging Cable Included)

The included USB cable can be plugged into any socket with a USB interface, such as a car, laptop, or phone charger adapter or power bank socket. You can keep both the cable and an inexpensive USB wall charger/plug adapter in the bathroom for when the battery needs charging (roughly once a month).

This sonic toothbrush has a low battery indicator that lets you know when it's time to recharge it. It also automatically shuts off after the battery has been fully charged to prevent overcharging.

Fitted Travel Case and Protective Brush Head Cover

The hard plastic, fitted toothbrush travel case has molded sections to hold the handle, one brush head, and the interdental brush head. There is also a space-saving clear, hard plastic brush head cover if you want to travel with just the handle and one brush head, rather than the larger, fitted storage case that also holds the interdental brush head.

IPX8 Waterproof

The IPX8 Waterproof rating (an improvement from the IPX7 Waterproof rating on my Dnsly brush) means your electric toothbrush can survive immersion in fresh water up to 1.5 meters deep for 30 minutes without damage.

You can thoroughly clean the entire brush with soap under hot running water and even brush your teeth while you are taking a shower if you wish!


The brush itself weighs just 55g, "less than half of ordinary sonic toothbrushes" according to the manufacturer's product information.

Two Color Choices

I purchased this set in black, but it also comes in pink.

Pink sonic toothbrush set with 8 brush heads and travel case
Purchase the pink toothbrush set on Amazon

Less Than $20 for the Entire Set

At just $19.99 for the black or pink set, with free shipping for Amazon Prime members as of 10/12/23, this set delivers a huge bang for the buck.

2 electric toothbrush sets (one black and one pink) with replacement brushes and travel cases
Available on Amazon

You can also get a set of two sonic toothbrushes, one black and one pink, with 12 color-coordinated brush heads (five of each color), 2 color-coordinated interdental brushes, and 2 color-coordinated fitted travel cases) on Amazon for just $39.98. Having two sets in different colors makes it easy for spouses, partners, siblings, roommates, etc. who use them to tell which toothbrush is theirs.

Features Not Included in This Sonic Electric Toothbrush Set

Even though this set is excellent and a tremendous value, there are a few features that some of my previous Oral-B and Philips Sonicare ultrasonic toothbrushes had that this one does not.

No Charging Base

The only way to charge this sonic brush is with a USB cable (included). While many people prefer this method, some may prefer having a dedicated charging base plugged in near the bathroom sink.

Since hearing several respected medical and dental experts advise "Don't brush where you flush," I have started storing my toothbrush in my bedroom instead of my bathroom anyway, so the USB charging requirement isn't an issue for me.

No Battery Charge Level Indicator

My last Oral-B ultrasonic toothbrush had four stacked LED lights on the handle to indicate how much charge was left. I used to store the toothbrush on its charging base, however, so I never looked at it unless I was traveling for an extended period.

The low battery indicator works fine for my purposes.

No 3-Minute Timer Option

I liked the choice of 2-minute (30-second intervals) or 3-minute (45-second intervals) brushing times on my pricy Oral-B model. However, if I want to spend a bit more time on certain areas, it's easy enough to press the mode button of my choice to resume brushing after the 2-minute automatic shutoff.

Note: None of my Oral-B or Philips Sonicare toothbrushes had Bluetooth connectivity or wireless fast charging, and neither does my new brush. However, one or both of these features are built into many of the newer models from these leading brands.

The Perfect Travel Toothbrush

Even if you don't want to replace your current ultrasonic toothbrush, this very inexpensive sonic set would be great to keep in your carry-on luggage for traveling, thanks to its long battery life, convenient USB charging, toothbrush travel case, and protective brush head cover.

A Great, Affordable Gift Under $20

This electric toothbrush set would make a great gift for anyone who is currently using a manual toothbrush, wears braces, is a college student, or has difficulty getting their current toothbrush into hard-to-reach places.

It also makes a great stocking stuffer. No one would guess that this set, complete with a travel case, brush head cover, seven brush heads with fading bristle replacement indicators, an interdental brush head, and a USB charging cable, costs less than $20!

The Best Dentist Approved, Inexpensive, 5-Mode Electric Toothbrush by Margaret Schindel

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Note: The author may receive a commission from purchases made using links found in this article. “As an Amazon Associate, Ebay (EPN) and/or Esty (Awin) Affiliate, I (we) earn from qualifying purchases.”


  1. I've never used an electric toothbrush. Clearly, I would need to familiarize myself with which brush head to use, where. I can certainly see how it would clean better than my old fashioned standard toothbrush. As that price, it makes it quite the temptation to try. Thanks for the great review and recommendation

    1. Sylvestermouse, once you try an electric toothbrush, you will never go back to a manual model! They leave your mouth feeling so fresh and clean, and the sonic/ultrasonic vibrations can dislodge debris more effectively and efficiently than manual brushing (see the Dentistry Journal article I referenced in my review). At less than $30 for the entire set, including two years’ worth of brush heads, it’s too good a deal to pass up!

  2. I also have never used an electric toothbrush, but often wondered if they were superior to regular brushing. At this low price point, it is affordable enough to be able to give it a try. Thanks for review it.

  3. Elf, I encourage you to pick up one of these inexpensive but high quality Dnsly sets and decide for yourself (especially if you can get in on the Prime Early Access Deal that ends today). The difference in how clean your teeth and gums feel is hard to explain and something you need to experience for yourself. I also LOVE the little interdental brush head that can do a much better job of cleaning the tight spaces in between the teeth than a regular brush head.

  4. Oh I think this is wonderful as we need a new electronic toothbrush set. The one we have is an Oral B and the replacement heads are quite expensive. I think I would like this set as it has that soft setting. My mouth is super sensitive to the vibrations so this just might help me ease into using one on a regular basis. Thanks Margaret for your thorough review!.

    1. Olivia, I hope you can jump on the Amazon Prime Early Access deal today only, when the set of two Dnsly electric toothbrushes with three regular brush heads and one interdental brush head for each set costs less than $30! I think you’ll love the soft, rounded bristles and sensitive brushing mode option.

  5. Margaret, wow, thanks for the heads up on the Dnsly Toothbrush! I'm always interested in good products for caring for teeth - in fact, I like to give these as gifts too. This sounds like an excellent deal. I wouldn't mind getting one of these. I use a waterpic for my teeth as well, but I could use a good quality toothbrush like this!

    1. Barbara, this is a fabulous deal on a great ultrasonic toothbrush set. I also love how affordable the replacement heads are! I agree with you about these making a great gift, too. I hope you enjoy yours as much as I do mine if you decide to order one!

  6. Oh, WOW!! I will certainly keep this in mind. What a great bargain!! We currently are using Phillips sonic care when I'm ready for a ne one this will be it. Thanks!!

  7. You’re very welcome, Sam! I think you’ll be pleasantly surprised at the quality, and you can’t beat the price! I think these would make great stocking stuffers, too.

  8. I currently use an Oral B electric toothbrush so it was interesting to read your review of the Dnsly Toothbrush. I especially like all the different modes this toothbrush has and that it has an interdental brush. I love that it is great for travel and what a fantastic price!! Thank you for your review and recommendation

    1. Thanks so much, Raintree Annie! The interdental brush head is awesome. I also prefer the regular “daily” brush heads to my Oral-B brush heads. And you definitely can’t beat the price. The travel case is great (and very lightweight and compact), and you can’t beat the price!

  9. I have never used an electric toothbrush nor do I know much about them, Margaret, so your article was very educational.

    1. I’m so glad it was helpful, Brenda! Once you try this inexpensive, well made Densly electric toothbrush, you’ll never want to go back to a manual toothbrush. 😊


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