What Susie said :lol:
Also, with the right diet, even dental bunnies with recurring problems can have the time extended between their dentals, but you do have to be strict.
Some bunnies with teeth that 'should' be fine after the first dental aren't though. My Barney is one of those, he doesnt seem to have any problems with how his teeth/jaw are laid out. But he gets spurs on one side. He had to have two dentals close together recently. I've been giving him a wider variety of hay (I was just giving him his 2 favourites) and I am hoping that the different grasses together will give him a more even wear. It has now been 6 weeks since he had his last dental and *touchwood* he still seems fine. Annabelle also had a small spur last time I got her checked, but she hasnt needed it treating yet. They have a good diet as well, its just one of those things, there are a few tips and reasons why this may happen in this thread of mine:
http://forums.rabbitrehome.org.uk/showthread.php?304399-Why-non-dental-buns-turn-into-dental-buns
But some buns have one dental and then never need another.
Bear in mind that if you did give Izzy back to the rescue your other bun would have to go too, its not fair to split them up.