HI:There is always a chance of nerve damage when you are redoing crowns, specially if it has been done recently. Overall, getting work done overseas and not having a chance to get proper bite adjustment or handle sensitivity is a gamble.Best,Dr. Maddahi
Hi:There is a possibility of being able to remove the post. It might be best to go to a root canal specialist to get the post taken out. If successful then make another post and a new crown.Best,Dr. Maddahi
Many factors go in to creating a crown. It is necessary to have a very skilled ceramist to ensure a natural and precise result. Don't have the crown permanently placed until you are happy.