Tooth cleaning – electric toothbrushes put to the test: the bristles make it up – Kassensturz espresso



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Devices are cleaned with rotating or vibrating brushes. But only the rounded bristles protect the gums.

The quality of the bristles is suitable for most toothbrushes. Only two brushes fall off and cannot keep up with the others. You can get a good toothbrush for as little as 30 francs and one rated “very good” for 70 francs. This is how the most important test results can be summarized.

Test table

Test table

Detailed test results can be found here.

Bristle rounding is the most important test criterion

“Kassensturz” and the consumer magazine “K-Tipp” had the twelve best-selling electric toothbrushes tested in a specialized laboratory. The devices cost between 30 and 215 francs. Manufacturers of electric toothbrushes promise gentle cleaning with vibrating or rotating brushes. However, some can damage the gums. The cause: There are no rounded bristles on the brushes. Consumers cannot verify this for themselves, so the lab closely examined the ends of the bristles and evaluated them accordingly.

Oral-B’s “IO Series 7N” model performed better, at 215 francs, one of the most expensive devices in the test. As for the main criterion, rounding the bag, it obtained the second best mark. The device also impressed on the other criteria. Good too: over 100 cleaning processes can be done on a single battery charge.

Trisa’s “Sonic Performance” follows closely. The sonic toothbrush has the best rounded bristles, but the charging time is 17 hours. The device costs 70 francs, so it is much cheaper than the test winner and was therefore voted the best buy by the consumer magazine “K-Tipp”.

Most toothbrushes work fine

Most of the toothbrushes (eight models) scored well in the test. They all have good brushes, so they pass the most important test criteria.

Then it was tested

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On behalf of “K-Tipp” and “Kassensturz”, the specialized laboratory, the Ipi Institute for Product Research in Stuttgart, examined twelve electric toothbrushes.

  • The main control point was that Borstenabrundung: The brush head was enlarged 40 times under the light microscope and the number of rounded bristles was determined. The higher the proportion of carefully rounded bristles, the better.
  • Battery life / charging time: How many cleaning processes of two minutes each can be performed with a full battery charge at full power? How long does it take to fully recharge an empty battery?
  • Sturdiness: What damage will the devices show if they are dropped 4, 10, and 20 times from a height of 80 centimeters onto a plate? The drop test was carried out with a special drop drum. Using a tensile force testing machine, the experts determined how much force is needed to pull the bristles out of the brush head.
  • Driving: Three laboratory experts observed how well the toothbrushes reached the difficult areas of the mouth. Also rated: How easy is it to operate the devices? Does the operating noise bother you? How is the device in hand?

What is striking is the wide range of prices for “good” products. They cost between 30 and 215 francs. There are also differences in battery life and charging time. “The fastest ones loaded after 3 hours, while others took more than 24 hours,” explains Swen Richert, test director at the Ipi Institute for Product Research. For example, the M-Budget model took 18 hours and the Waterpik “ST-01 Triple Sonic” took more than 24 hours.

Two products fall

Two brushes cannot keep up with the other. The bristles of the “Mi Smart Sonic” model performed worse, after all, there was still a sufficient partial rating. But the battery power was only enough for 30 cleaning processes, which depressed the average. The overall rating is “sufficient”.

Opinion on the product Ion-Sei from the manufacturer Sanyei:

The manufacturer of the ion brushes writes that due to the patented ion technology, the brush runs very smoothly and there is no need to scrub vigorously by hand. According to Sanyei, the lack of rounding of the bristles with the Ion brush does not pose a risk to the gums.

The bristles of the Japanese product Ion by Sei were not rounded at all. Test manager Swen Richert cautions: “This brush has sharp corners and edges, and there is a risk of damaging my gums.” In the worst case and with prolonged use, this can cause the gums to retract. The worst grade on the sow rounding of the main test point consequently led to an overall rating of “poor”.

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