Green toothbrush

I'm trying to be more aware of what I'm using and throwing away. I've switched to cloth sanitary pads and washable cleansing pads but I'm wondering about toothbrushes. I would really like to use one that is either wooden or biodegradable but my problem is that I suffer from Rheumatoid Arthritis so having some kind of electric brush is quite important to make sure I can get a good clean even when my hands aren't working properly. Is there such a thing as an electric biodegradable toothbrush or is that an oxymoron in itself??