Thanks for asking the query,
Pain after root canal treament occurs due to re-infection of the canal leading to periapical abscess
and inflammation of the adjacent tissues. Visit a Dentist
and get an x-ray done of the affected tooth.
Take tab dologel three times a day for three days for pain relief.
If the tooth is capped food gets lodged sometimes leading to inflammation and swelling of the surrounding gums . Get complete mouth scaling and polishing done .
Maintain a good oral hygiene . Use 0.2% of chlorhexidine
mouthwash solution twice a day .take saline water gargles 3-4 times a day.
Pain can also be because of presence of high points , Visit the dentist and get the occulusion corrected, so that it does not make contact with opposing tooth this will also protect the tooth from fracturing .