Hi,     RCT is done to restore function of your tooth so yes you can eat and chew over a RC treated tooth.     Pain in a RC treated tooth could be due to many reasons. For that you have to consult dentist with xray of that tooth.      Re-RCT is not painful. For healthy teeth the quality of brushing is much more important that quantity. Meaning you have to focus on how you brush rather than how many times. If you have naturally deep grooves in your teeth, they will be more susceptible to caries.

Yes, you can eat with RCTreated tooth.. if u have during chewing food, it might be due to many reasons.. recently treated teeth might need some time to heal completely.. it might be from a simple high point reduction to reRCT.. so please visit your dentist and convey the problem.. reRCT is not painful..need not worry.. brushing is not the only solution to avoid oral problems.. there are many factors.. but please do continue brushing twice daily and ask your dentist about proper brushing techniques and all..

You can eat after RCT. If you are still having pain, then you should visit your dentist. Maybe some canal is still infected and ReRCT required. Oral hygiene doesn’t only depend on twice brushing, use proper brushing technique, mouth wash, flossing.

Visit a dentist...appropriate treatment can only be advised after proper oral examination and radiograph...