Plasma toothbrush with an innovative electrode configuration
The technology comprises an innovative toothbrush that uses an integrated high-voltage electrode to generate a cold plasma at the bristles, thus combining mechanical cleaning with an antibacterial plasma effect.
Challenge
Healthy teeth are an important part of overall well-being and contribute to a positive appearance. Plaque, tartar and discoloration can accumulate in mouth and oral cavities despite thorough with regular oral hygiene with a toothbrush and dental floss. If not treated sufficiently, in addition to aesthetic effects, severe consequences such as dental caries and gum disease can result. Unlike home dental cleaning with a toothbrush and mouthwash, professional dental cleaning reaches even hard-to-reach areas such as between the teeth and along the gum line. This is crucial for effectively removing bacterial plaque before it hardens into tartar. In comparison to standard toothbrushes, electric toothbrushes can deliver an enormous high number of movements per minute, with the aim to loosen and remove plaque by a combination of rotation and oscillations.
Our Solution
The present invention comprises a toothbrush with an integrated high-voltage electrode that is coupled to the bristle filaments, thus generating a cold atmospheric plasma at the bristles. The electrode is connected via a conductor to a high-voltage generator. The generator produces a specific voltage, enabling a multitude of discharges between the bristle filaments and the tooth or gingival surface. The current and discharge location can be specifically limited, protecting both the user and the electronics.
Illustration of the innovative plasma toothbrush according to the present invention from HAWK - University of Applied Sciences and Arts Hildesheim/Holzminden/Göttingen (Germany); image generated with Perplexity AI. .
Advantages
- Plasma brush head for electric toothbrushes
- Compatible with existing drives (rotating/vibrating)
- Handy, wireless and safe use
- Water resistance and prevention of unwanted discharges on the top and sides of the brush head
- Improved antibacterial effect and biofilm reduction
- Gentle, tissue-sparing application
- Penetration into micronic cavities, fissures and approximal spaces that are difficult to reach mechanically or with rinsing solutions
Applications
- Cleaning of teeth
- Professional prophylaxis and periodontal therapy
- Biofilm and germ reduction in oral cavities
Development Status
The technology has been experimentally tested. Functionality has been approved. Prototype and CAD drawings available.
Patent Status
German patent application filed.
Patent holder: HAWK - University of Applied Sciences and Arts Hildesheim/Holzminden/Göttingen (Germany)
Contact
Dr. Mirza Mackovic
Patent & Innovation Manager Technology
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Tel.: +49 551 30724 153
Reference: CPA-2679-HAWK
Published: January 12, 2026.
Tags: Plasmaphysik, Physik und Technik & Software, Medizintechnik
