Depending on the tooth being treated and the type of work being done you may be required to return to your general dentist for further restorative treatment like a new crown or a permanent filling. In general, you will need a crown on a molar or premolar tooth after a root canal is performed. You will be informed at your appointment if you need to return to your dentist for restorative work or if we placed a permanent restoration in your tooth. If you cannot remember what our recommendation was after receiving treatment please contact our office as failure to have your tooth permanently restored can lead to reinfection and possible fracture.