if your bunny isn't grinding his little teethdown enough from chewing on wood, your vet can help out.He/she can clip the teeth i believe...i know my neighbor had to do thiswith a hamster.
Also, to get your bun to chew on things more (that he should be chewingon), you might try to soak some of your bun's toys in organic applejuice. It needs to bed the kind that says organic, no extrasugar added...just basically apple juice that the farmers didn't addpestisides to. You can find this in most grocerystores. I found it in Giant and in Wegmans if you have any ofthose near you. Let a wood toy soak in the juice over night,dry completely, then give it back to the bunny. I bet he'lllove chewing on his new apple-flavored treat for sure! We didthe same for Emmit, mostly to keep him quiet at night, and he'll munchon his toys until the apple taste is gone (which thankfully takes awhile).
Hope this helps!
-Carrie