Although the pain after a proper root canal treatment is quite rare, but can happen either due to re-infection in the canal or localised gum inflammation or infection due to improperly shaped crowns or continuous food lodgement in the area...... please consult your dentist for a proper clinical examination..... X-rays will be required to rule out any problems with the root canal treatment done previously, and the right treatment plan can hence be reached upon..... Regards.....

Hi, You need to confirm the reason by visiting a dentist. The reason of pain can be due to reinfection in the tooth. Also since you have recently placed the cap the reason for pain can also be if the cap is slightly high. This can be confirmed only by visiting a dentist. But kindly do not delay visiting a dentist. Hope this information helps you. Regards, Benchmark Dental Clinic, Pune

Hello, This happens sometimes and gradually the pain goes away but in order to know the exact reason you need to get an x-ray done .

Sometimes Yes,  a root canal treated tooth may exhibit pain due to various factors. 1. A course of Antibiotics and anti-inflammatory. 2. Next - an xray to decide on plan 2