As former. Dental technician my product for my own dental care was recommended by my dentist. It is an interesting innovation, but more unfortunately not. For large spaces between the teeth, it is almost unnecessary leftovers in tight interdental spaces should be distinguished: For cake crumbs, vegetables, etc. It works just fine, long-fiber meat leftovers can be, unfortunately remove incomplete, especially in interdental spaces, where fillings exist, leave remnants. The better alternative - and without electricity - continues to be dental floss (Super Floss, etc.), which in addition also removes plaque in the interdental space by the direct contact to the tooth during Durchfädelns, this cleaning effect, the device offers not unfortunately. Conclusion: not very cost-effective alternative with limited range of application.