How Long Should an Electric Toothbrush Last?

Last Updated On April 20th, 2016

How long should an electric toothbrush last? Generally speaking, you can safely use one for up to three months without needing to replace the bristles. Of course, there is a whole host of things that you have to consider when it comes to using an electric toothbrush. For example, are you able to simply remove the bristle attachment and install a new one so you can keep the same electric toothbrush without having to replace it time and again? Is the electric toothbrush rechargeable or does it run on batteries? All of these things will help you better understand how long you can use it without having to do something to it.

When to Change the Bristle Head

If you have one of the more expensive electric toothbrushes that is rechargeable and has a detachable bristle head, you can keep the same electric toothbrush for as long as it works properly. In some cases, this might be a year or two and in some cases, you might have it for several years. Even if it is battery operated, you can still use it for several months without having to replace the batteries as long as you choose a high quality set of batteries in the first place. The more important things to be concerned with involves knowing when it is time to replace the bristle head on the toothbrush.

You should really follow a hard and fast rule that ensures you replace the bristles every three months. If for some reason you are not able to do that, you should replace the entire electric toothbrush at this time. For instance, you might find it difficult to achieve this if it is difficult to remove the bristle head or you have an equally difficult time finding a replacement part anywhere. In some cases, it is even more cost effective to buy a new electric toothbrush in its entirety than it is to replace the bristles. Whatever you do, you should never brush with the same toothbrush for more than three months.


Some electric toothbrushes even have built-in reminders, usually in the form of a section of bristles that turn completely white when it is time to replace them. If you don’t have a toothbrush that gives you access to these features, it might be a good idea to mark it on the calendar so that you know when it is time to buy a new one. If you forget, you will probably get reminded because the toothbrush simply isn’t cleaning well. Maybe it even starts to leave a bad taste in your mouth after you brush. The best rule of thumb that you can follow is that if you are in doubt, go ahead and replace it and then do your best to make note of when you start using the new one. Following this practice will help you have a cleaner mouth that feels better and your teeth will look great. It also helps to ensure that you eliminate the possibility of any bacteria unnecessarily being introduced into your mouth as the result of a dirty toothbrush.

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