This is the conclusion reached by Stiftung Warentest. She tested ten electric toothbrushes new to the market (Test issue 12/2023).

The cheap model cleans most thoroughly.

The test is dominated by two expensive models from the Oral-B brand. Toothbrushes “iO Series 10 Cosmic Black” (320 euros) and “iO Series 4N” (100 euros) received a rating of 2.0.

But the “Diadent Total Clean Pro” model is slightly behind Budnya with a score of 2.1. This electric toothbrush costs only 20 euros, and in terms of cleaning performance it is even better than the two models that won the tests.

There are two other affordable toothbrushes that product testers are happy with. The Sensident Sonic Professional toothbrush from Müller costs around 30 euros and has a rating of 2.3. Nearby is the Prokudent Motion model from Rossmann (class 2.4). At €12, this is the cheapest toothbrush in the test.

Dealing with compromises

But if you’re shopping for a bargain bathroom at the drugstore, you’ll also have to make some compromises. Although brushes are reliable at removing plaque, they often cannot compete with brand-name models in terms of controllability.

This can be seen, for example, in pressure control: if you press too hard while brushing your teeth, the electric toothbrush should sound a warning signal, according to product testers.

However, none of the three drugstore brushes were convincing on this issue. The Rossmann model is completely devoid of this function; on the Müller toothbrush, pressure control is only available in one of four brushing modes—and the warning signal is “barely noticeable,” according to product testers.

The Oral-B iO Series 4N toothbrush is one of two models that won the tests (class 2.0). It costs about 100 euros.

© dpa / Ralf Kaiser/Stiftung Warentest/dpa-tmn

Battery replacement is only possible for a few brushes.

Even if you want an app to teach you how to brush your teeth, you can’t avoid buying an expensive brand name product. For example, two test-winning brushes from Oral-B can be connected to an app that analyzes brushing behavior. Manufacturers Philips and Xiaomi also offer such digital assistants.

What about sustainability? Stiftung Warentest complains that it is not possible to replace the battery at home in any of the ten models tested. Finally: For the two Oral-B models that won the test, customer service can install a new battery if you send the device. Pharmacy brushes, on the other hand, become e-waste once the battery runs out.
© dpa

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