but it does depends on his mood as to whether we manage to get him to clean any teeth. I figured he would just get there sooner or later as long as we kept going with it. I did start to think that maybe these cool toothbrush holdesr/timers might help.
But i've discovered that it may be as simple as an electric toothbrush! Due to a wisdom tooth coming through i went to the dentist for a check up recently and was told among other things to start using my electric toothbrush again. Theodore on seeing it immediately wanted to use it and has done ever since, allowing me to get it to clean every inch of his mouth and more as he doesn't want to stop using it. The novelty value may of course wear off quite quickly, but for now it seems to be the answer to the brushing resistance!
There are of course electric toothbrushes designed just for children. But for now Theodore will use mine and we'll just see how he gets on.