For the past three years my partner and I have been using the Japanese toothbrush Soladey. This is claimed to use a titanium rod in the handle to produce ions that fight bacteria and plaque.
Our experience is that it works very well and one does not need toothpaste, only a good light to make it work. Neither of us have needed any dental treatment nor hygienist in the past three years and our dentist is so impressed that he may recommend them, though it may put him out of business! We are well advanced in age and have had much dental work until we started using these toothbrushes.
Hoping this helps someone else to good dental health. Details are available on their website: http://www.soladey.com