Start small! For the first week or so, be content with just smearing a little toothpaste on his canines (the big fangs at the front) Maybe even let him just lick the paste off your finger. Try to make it a regular routine, same time every day, so your dog comes to expect it and look forward to the attention and the nice taste. Once you have the routine established you can then start using the brush, and gradually work your way onto the back teeth, where most of the problem will be. I think I see one of the thimble brushes in the picture; start with that, but the 'proper' brush will be better in the long run. Finally, chews, bones and biscuits will all help, but nothing cleans like a brush :)

Seriously Seeme, it ain't gonna happen. I think I would just get some floss and see how that goes. Good luck.

Beware-there is an ingredient in human grade toothpaste that can cause illness. gghy is correct to suggest beginning slow.

Feed your dog baby carrots. Most dogs learn to love it and they clean the teeth great!

tell your dog it is cat flavor and you will have no more troubles.

There is a finger sleeve toothbrush that he will probably accept much better. You just put some paste on the rubber, studded sleeve and stick your finger against the dog's teeth and rub. Of course, if he doesn't like that either, then you've lost a finger. ;^)