Questions Answered By Dr. Priyank Mehta (2) Male | 37 How long does a root canal last without a crown? Answered on 17th Feb '23Completely depends on preoperative condition of your tooth.If crown structure is excessively damaged then you required immediate crown.if not then you can wait for some days.Male | 38 Why do i need dental x ray? Answered on 17th Feb '23For better diagnosis