Dremel. It comes with an attachment that has bristles similar to a tooth brush. Use that. You can also use the sander attachments for DIY dental work.
On serious note, I have used the Oral-B cheapy ones and they work fine though they're not really permanent. I had to throw mine out after a while, forget what happened, it's low quality as far as durability but it works nice. Though for the sake of the planet if you find yourself just buying lot of those just get a good permanent one.
On serious note, I have used the Oral-B cheapy ones and they work fine though they're not really permanent. I had to throw mine out after a while, forget what happened, it's low quality as far as durability but it works nice. Though for the sake of the planet if you find yourself just buying lot of those just get a good permanent one.