Adut in which root canal treatment has been over should not be sensitive otherwise. The current x-ray of the tooth will be required to provide a more rational opinion whether it is infected or not currently. If the tooth is infected it can be due to multiple reasons and Re RCT can be done to correct that so that extraction of the tooth is avoided.
Please post the current x-ray of the tooth if you have so that we can evaluate the same and give you our opinion.
Regards
Answered2017-10-16 12:37:27
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