Joined in 2023 
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63 About this deal
There are 2 parts to the brush, the handle I have been describing. This has all the clever bits of technology in. 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. 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 price does exclude the cost of water, toothpaste and electric to charge it. This price also works on some assumptions, but you get a rough idea. Some Sonicare and Colgate models do actually achieve up to 3 weeks, but Oral-B are now much much closer in their capabilities.
Bluetooth connectivity allows the toothbrush to be connected to the Oral-B app allowing for a personalised brushing experience 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 built-in pressure control technology senses your brushing technique and alerts you on your speed and pressure, helping protect your gums. The sleek toothbrush has three unique brushing modes that help to remove plaque, offer a superior clean and delicately whiten to achieve healthy pearly whites. This means that the LED sat behind the panel lights up. You get a bright red light that you won’t fail to notice. Various conditions may affect this quoted usage time, but safe to say you are getting at least double the performance, yet despite the battery change the physical size of the brush handle has not altered.
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.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 charging stand is fairly self explanatory, but I explain more about this in the battery section of the review. In the unlikely event, something goes wrong, there is as standard a 24 month warranty is provided with the 4000. This covers the battery too. Register the brush online and you get an extra 12 months at no extra cost, so 36 months or 3 years in total. 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. At times I have found these distracting, you may want to customise the settings to avoid some notifications.
You can bring the cost down further if you were to share it with other members of your household. All you need do is invest in extra brush heads. Up to 100% more plaque removal and gently whitens your teeth starting from day 1 by removing surface stains 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. 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. 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.
The Smart 4 uses a handle design that has been tried, tested and perfected over many years and I really can’t find any obvious faults with it. It is well built and solid in hand. It is important for your oral health to replace your toothbrush head every 3 months or sooner if your bristles are frayed.
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. 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. 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. There is no denying that this brush cleans the teeth and mouth well. It offers a pretty decent battery life, whilst also looking fairly good and feeling solid and slim in hand.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. 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 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. Does this Smart 4 have the ability to turn off the timer? If not, which brush should I be looking for? One of the benefits with the Smart 4 is that you do get 2 of the same brush heads included, so if you like that style of brush head you do save yourself a little on the cost.
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