Oral-B Sonic Complete S-320 Review

Oral-B Sonic Complete S-320The Oral-B Sonic Complete S-320 is a new sonic toothbrush on the market, with some lofty claims. This is the first sonic toothbrush from Oral-B, and is a very popular model among both reviewers and users of the toothbrush. It includes a number of features that make it a great sonic electric toothbrush that just might be the one for you.

Oral-B Sonic Complete S-320 Product Overview

  • Comes with deluxe travel case and charger stand with head storage
  • Includes two Oral-B Sonic Complete brush heads
  • Removes 99% of plaque to prevent gingivitis

The Oral-B Sonic Complete S-320 is a great sonic toothbrush from one of the two big leaders in the world of electric toothbrushes. If you’re not sure of what a sonic toothbrush is and now it differs from a standard electric toothbrush, let me explain briefly. A sonic toothbrush vibrates extremely quickly, much faster than a regular electric toothbrush. This could be up to 30,000 strokes per minute, which is a huge amount of cleaning. This ultra high speed also results in vibrating water molecules and sound waves which are very effective at cleaning teeth.

Being a sonic toothbrush, the Oral-B S-320 leaves your mouth feeling extremely clean. It also works very well at removing stains caused by heavy coffee or tea drinking, with improvements usually showing in as little as two or three weeks.

The Oral-B S-320 has a total of three different brushing modes: clean, soft, and massage. The clean mode is your standard cleaning mode that will get the most use, but you can use the soft and massage modes if you prefer, allowing for a personalized clean. Also interesting about the Oral-B S-320 is that the brush head has two different types of bristles. There are CrissCross bristles which are angled to have optimal cleaning ability between your teeth, and there are Power Tip bristles which are longer and designed for the hard-to-reach areas of the mouth. The bristles are a bit harder than what you might expect from other electric toothbrushes. This means that you’ll get a better clean and better results when it comes to removing stains, but it could also cause some slight gum bleeding for those prone to it.

As you’d expect with any good electric toothbrush, the S-320 has a built-in brushing timer to ensure a proper clean. The 2-minute timer, which is what dentists recommend brushing for, will automatically count down, and every 30 seconds the brush will pulse, prompting you to move to another area of the mouth. Something I’d like to point out is that the S-320 will continue to function after the 2-minute timer is up. This may be a pro or a con depending on your preferences, as many other electric toothbrushes will simply turn off when the 2-minute timer is up. If you like to brush longer than 2 minutes, you’ll appreciate the way the S-320 works.

The charger works well for what it is, and takes up little space in the bathroom. A great little feature of the charger is that you can mount it on the wall if you prefer, which is unique to this model.

Unfortunately, the Oral-B Sonic Complete S-320 has no battery indicator, which could be somewhat of a pain if you travel. We should note that the battery does take a significant amount of time to charge as well – at over 18 hours from a completely empty state. Having said that, you’ll probably have the toothbrush on the charger almost all of the time anyway, so the battery life wouldn’t be very important.

Conclusion and Important Notice About the Oral-B Sonic Complete S-320

Although the S-320 is a great sonic toothbrush, we find it hard to recommend due to the price when compared to other electric toothbrushes. Although this is a sonic toothbrush and is likely the reason for the price, we would recommend another model like the Oral-B 5000 which is a more fully-featured electric toothbrush at a much more affordable price point.

If you simply must have a sonic toothbrush then the Oral-B Sonic Complete S-320 is great, but in our opinion you’ll get a better value with a model like the 5000 series.


  • Sonic technology offers awesome cleaning compared to a standard electric toothbrush
  • Replacement brush heads are cheaper than many other models


  • No battery life indicator
  • More expensive than some more fully-featured electric toothbrushes

Price Watch: Amazon is offering a great price which includes free shipping on the Oral-B Sonic Complete S-320 for a limited time.

Click here to see the price of the Oral-B Sonic Complete S-320 on Amazon.com!