Oral-B Smart 4 4000 review

How the Oral-B Smart 4 looks, feels and works

Between brands and even different ranges from the same brand, the design and feel of a brush in hand can differ, however, most have a fairly slim, rounded profile to them.

Oral-B has always done, in my mind, a pretty decent job when it comes to the look and feel of the brushes.

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Could they do away with some of the plastic construction? Yes, they probably they could. However, I think the look of the Pro and Smart models are actually a nice blend of design and everyday practicality.

The Oral-B 4000 is an all white design. A gloss white plastic body is finished with a soft touch rubber grip that runs down the front of the brush handle. On many other models this a bolder colour to give it a bit more character and more eye catching, the Smart 4 4000 looks quite clinical.

Despite this, it is grippy and has a series of ridges around the power button that help hold and guide you to the controls of the brush. On the back of the handle is a harsher but still practical series of grips. Raised plastic notches give the fingers sticking points on the upper half of the handle.

For me, these are small practicalities that make a big difference in everyday life.

Virtually at the top of the brush handle in between the contoured grips is the power button that is white in colour with a grey/black power icon on it. The contrasting colour of the icon helps it stand out against all the white body.

You don’t want a button that is too easily activated or too firm, thankfully that is not the case on the 4000. It has a nice resistance when pressed. Not too soft that it can be accidentally activated, but not too firm it is difficult to press. Good even for those with limited dexterity in my opinion.

The lower third of the brush handle has the Bluetooth, Oral-B and Braun logo in grey/black as well as a battery and charging icon below them.

These icons are transparent and have an LED light behind them that illuminate at certain times.

There are 2 parts to the brush, the handle I have been describing. This has all the clever bits of technology in.

Sealed inside, these parts are protected from water and moisture. This means that the brush is water resistant and can be rinsed under a tap and used in a shower.

The likelihood is that it would survive, but I strongly advise you avoid submerging the brush below water, for example in a bath or sink. A rinse is fine, but the brush does not need to sink to the bottom of a bowl of water.

The second is the detachable brush head, I will explain a lot more about this shortly.

If you take a look at the very bottom of the brush handle, there is a recess, into which the pin on the charging stand connects to. A charging stand is provided.

The brush is able to stand upright without the stand.

Right at the top of the brush handle is a metal prong, this is what the brush head connects to and feeds the power from the brush motor.

Just below this metal prong on the rear side of the handle is the pressure sensor.

Are you familiar with a pressure sensor?

If not, in this case, it is a plastic panel that is a red/orange colour, it sweeps up over and down the neck of the handle.

When you brush, sensors within the brush detect if you are applying too much force to your teeth. When it detects this, it activates the pressure sensor.

This means that the LED sat behind the panel lights up. You get a bright red light that you won’t fail to notice.

At the same time as the LED pressure sensor illuminates, you should also notice that the speed of the brush head will decrease and the sound of the motor will change. This is nothing to worry about. It is programmed to do this, until such time as the pressure is relieved.

You see, applying too much pressure when brushing is a big issue and it causes more damage than you might think. Excessive pressure can damage the gums and cause wear on your teeth. A brush need only skim the surface of the tooth and gums. So, the brush reduces the power to protect your teeth.

Just relieve the pressure and the light will go out and the motor power up again. Just remember to let the bristles essentially glide across the tooth surfaces.

If you activate it often, don’t worry all that much, over time you will learn and avoid doing lasting damage to your teeth. Just imagine if you didn’t have it…

The Oral-B Pro 2 2000 has 2 cleaning modes, the Pro 3000 has 3 cleaning modes, the Smart 5 5000 has 5 cleaning modes, so as you would imagine the Smart 4 has 3 cleaning modes….Yes, I know, I can’t quite figure that out either.

The 3 cleaning modes are:

• Daily Clean
• Sensitive
• Whitening

Remember the order of these, you will need to refer to this in a moment.

Unlike the Pro 3 3000 the Smart 4 is a bit smarter, as the name implies. More on this shortly.

Each of the 3 cleaning modes work slightly differently, with differing levels of oscillations, rotations and pulsations to achieve different cleaning effects on the teeth.

For example, Sensitive mode reduces the number of movements to be softer on the teeth and gums.

What I find somewhat odd is that Oral-B have not included a Gum Care or Sensitive brush head with the 4000. Would that not make sense to pair with the sensitive cleaning mode?!

To activate each cleaning mode, you have to use the power button on the front of the brush.

Remember the list above, this is the order of the cleaning modes.

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Press the power button once to turn it on. Daily Clean mode will launch.

Press it again to change the mode to Sensitive.

Press it a third time to activate Whitening mode.

A fourth time will turn the brush off.

You can press and hold the button for 2 seconds at any point to power it off.

This makes sense, but there are 2 issues in particular that I have with the way in which this has been configured.

The first is that to change to any of the cleaning modes, you first have to power the brush on and the second is you need to remember the order.

I suspect over time you will learn this, but wouldn’t some icons or LED’s be helpful to show the mode. The more premium Smart 6 and Genius range offer them.

Ideally, a way of selecting the mode prior to actually turning the brush on would be the solution. This is not available, not even on the premium Genius 9000 model.

Most Sonicare brushes allow you to do this though.

Another small but significant thing to remember is; put the brush in your mouth before powering on and changing modes otherwise the toothpaste might go flying across the room.

Buy the Genius 9000 and although you have to power the brush on to change the cleaning mode, if you have changed the mode, it will remember it. Next time you power the brush on, it will begin in that mode. The Oral-B Smart 4000 electric toothbrush does not do this.

I understand why though. If it did, there is no way of showing what mode it is on, unless you use the app.

When using the Bluetooth connectivity, the app will show the cleaning mode. I will explain the connectivity option in more detail shortly.

Despite the criticisms of the way in which the cleaning modes are presented, I do love the clean that an Oral-B brush offers. Studies have suggested Oral-B’s oscillating and rotating technology is superior, but there are studies that side with Sonicare.

It is a little harsher/aggressive feeling than a Sonicare or Colgate brush. Whilst this is not exactly the best way of rating a clean of the teeth, it really feels like it has done something. I prefer it.

The handle offers some 16 days of battery life and is lightweight.

When the battery built into the brush begins to deplete, the charging icon will flash Red.

You do not get anything more detailed from the handle.

It would be nice if you had a green light to suggest a good amount of remaining charge or yellow for less than 50% for example, but no such luck.

Even better would be a little LED display that showed the exact battery percentage (%). Or in the case of the Smart 4, the app picked up the information.

The battery icon will flash green when the brush is on charge.

In the box with the Smart 4 you get 3 styles of brush head.

• 1 x CrossAction
• 1 x FlossAction
• 1 x 3D White

There is a range of more than 6 different styles of brush heads you could use on the Smart 4.

The heads are interchangeable, so you can select your preferred head and use it with any of the cleaning modes, although some work best with particular modes.

To fit or remove the brush head simply align the metal with the hole in the shaft of the brush head and push the two together until you hear and feel them clip into place.

Pull the two apart to release them.

It is important for your oral health to replace your toothbrush head every 3 months or sooner if your bristles are frayed.

Official Oral-B brush heads are recommended and they all have something known as indicator bristles. These are Blue coloured bristles that will over a 3 month period gradually discolour.

When they are a very pale blue or white it is time to change. It is a clever reminder system.

Would you like to know more about the brush heads, the styles, how they work and the aftermarket options? I recommend you take a look at my Ultimate Guide to Oral-B brush heads.

Most cleaning modes on this brush run for 2 minutes.

If you did not already know, this is generally the recommended brushing time. 2 minutes, twice a day.

If you didn’t know this or are guilty of not brushing for as long as you should, the Smart 4 can help in 2 ways.

The first is the built-in timer and quadpacer.

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Imagine your mouth broken up into 4 sections. Upper right, upper left, lower right and lower left.

You should spend 30 seconds cleaning each section. The pacer helps you keep an even brushing time on these 4 sections.

At 30 second intervals, the brush will provide an audible warning via a slight pause in the brush motor at to tell you to change quadrant. Once the 2 minutes are up 3 brief pauses in the brush motor will be heard and felt.

Brushing for the full 2 minutes is very important, but just as important if not more so is the right technique. Make sure you learn how to clean your teeth properly.

The second was in which it helps is through the more powerful Bluetooth connectivity and smartphone app.

The idea behind this connectivity is to encourage you to brush for the right amount of time and evenly.

To take advantage of this smart feature you need an Android or iOS smartphone and Bluetooth 4.0 on your phone.

Download the appropriate app and install it on your phone.

You can download from iTunes here and Google Play Store here.

As good as the app is, I feel this may also be one of the negatives as some will not see the point of using it or find it more hassle than it’s worth. You don’t have to if you don’t want to.

If you feel you won’t use it, you may want to consider if the Pro 2 2000 is for you, you will be paying for a feature you won’t necessarily use otherwise.

It takes a bit of practice to get in a routine of having your phone with you when brushing. If you forget it or don’t have it to hand, don’t worry. The handle will store the data for the last 20 cleans and sync this to the app, the next time it connects.

It is also worth knowing that the Bluetooth connectivity works only for one user. If you share the brush handle with a partner, this will mess up the data. If you and other family members all want to track with the app, you need your own brush handle.

The app is very comprehensive with lots of options. It gives you all you need though to not only effectively brush your teeth, but to log the cleans and motivate you.

There are features like integration with your calendar so you can see your days’ agenda, news, tips and tricks, so you stay interested when cleaning your teeth.

At times I have found these distracting, you may want to customise the settings to avoid some notifications.

You can also set personalised modes which can disable cleaning modes on the brush handle too.

Sadly the app does not show the battery power of the brush handle.

The main feature of the app is the on screen timer and guide that shows you where to brush and how well you have brushed.

Whilst not essential, it would be nice if Oral-B included some form of smartphone stand with the 4000.

If you want to make best use of the smart features, you need to have the phone to hand. Holding it for 2 minutes whilst you brush can be frustrating.

It need not be a suction cup holder like the Genius 9000 comes with, but a countertop option would be a nice alternative. It would only cost a few dollars extra.

The idea being, launch the Oral-B app, sit the phone in the stand and you can now see the timer and how well you are cleaning, plus all the useful advice.

Whilst not all choose to or like you use their phone in the bathroom (water & electrics) the dock would give somewhat of a more suitable home to the phone and encouraged the use of the smart element of the brush.

With this said, maybe this is what encourages you to look at the more premium models that do include something similar.

Aside from the aforementioned 3 brush heads, the Smart 4 comes with a brush head storage compartment included in the box.

This is a moulded piece of plastic that clips around the charging stand that is also provided.

It is essentially a tray with 4 recesses into which a brush head can be laid. A translucent lid then closes down over them protecting the heads from dust and debris. But, importantly allowing ventilation so the heads can dry out.

It is a handy accessory if you like to use multiple heads or share the handle with other people.

The charging stand is fairly self explanatory, but I explain more about this in the battery section of the review.

There are 2 variants of the Smart 4. 1 comes with a travel case, the other doesn’t.

The model numbers are the same and the packaging looks the same, but what you get in the box is different.

The variant with the case is primarily sold via Shaver Shop for the same price as the one without a case.

I think this is worth picking up, because should you travel, go on vacation etc, it helps protect the handle and head.

You get an impressive 180 days to try the Smart 4 with Oral-B’s money back guarantee. It is essentially like a trial, whereby you can buy and try the brush. Should you not like it you can return it for a refund. This is particularly useful if you are unsure whether an electric toothbrush is for you.

In the unlikely event, something goes wrong, there is as standard a 24 month warranty is provided with the 4000.

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