My greek tortoise has an underbite but i heard that it was a sign of early mbd. My tortoise did have mbd when i first got him (softshell) but his shell recovered and is hard as a rock. He has never been sick, always has a healthy appetite, and gets plenty of calcium and sunlight. I was wondering, because his underbite began long after the shell had healed, why this happened. It seems to make it harder for him to eat. I heard that you may be able to slowly file the jaw down but i am afraid to do that. any suggestions?