You should take it easy and stick to soft, mild foods for one to three days after your root canal treatment. This allows the tooth time to begin healing without disruption. Full healing of the tooth and surrounding tissues takes approximately one to two weeks until you can receive a permanent crown restoration.
During this initial healing period, be sure to avoid chewing or biting on the treated tooth as much as possible, using the opposite side of your mouth instead. This prevents damage to the temporary filling or tooth structure.