I had root canal done a year ago and have a temporary plastic material. My original crown was damaged. What can I do?

I had an RCT done about a year back and since then having a temp. plastic material covering it. It is not a cap just some plastic to hold the tooth and to maintain the gap between the tooth. After the RCT the doctor tried to put the permanent crown but it was not a proper fit. The doctor tried to shorten the crown but in doing so the crown was damaged. The doctor had made a new crown but I couldn't get the time to have the new on placed. Since then I am on the temp. crown. Please advice.