What you need to do depend upon how much of the tooth is broken down, and how much, and which part, is intact. The treatment may vary from a simple restoration to a Root Canal treatment
( with or without a Post & Core), a crown or extraction. What you need to do, definitely, is to set up an appointment with your dentist
, as the earlier you see him/ her, the better the chances of being able to retain
it. Also, the longer you wait, the more complex the necessary treatment might end up being.