Pls.take.an xray.with your dentist Can be adjacent tooth cavity or.abrasion .missed canal. Use can use senqueal ad mouthwash and sensodyne tooth paste for time being

there can be high points.get the adjustments done by your  dentist.

Reasons - Delayed body response to RCT - Caries in adjacent teeth due to food accumulation. - Or there could be an extra canal which is undetected. And a few other reasons An xray of the tooth will be very helpful in determining the actual cause. You can consult online with the Xray to get a diagnosis. Meanwhile what you can do is: - Lukewarm salt water rinse thrice daily. - Floss on both sides of the Root Canal treated tooth to make sure there is no food accumulation. - Get an xray of the tooth. - Use an antisensitivity tooth paste. - Use medicated mouthwash rinse twice daily.

Sometimes , our body shows slow response in terms of healing after rct & so the crown . But , still you can follow preventive measures like. .... 1 . don't chew from that side anything hard or sticky. 2. Maintain proper oral hygiene by following proper brushing technique with ultra soft toothbrush. 3.eat lots of vitamin C rich fruits like aawla, oranges, strawberry, etc. To improve immunity, and oral health.