When finding the cement of a previous root canal treatment extending 1mm beyond the apex with no symptoms, what action should be taken?

When a previous root canal treatment has been found to have cement extruded beyond the apex without any symptoms, the best approach is to leave the existing situation as is until any complications arise. The rationale behind this choice is based on the understanding that asymptomatic cases often do not require immediate intervention.

Leaving the material in place allows for the continued monitoring of the tooth's condition without subjecting the patient to unnecessary procedures, which could result in more complications or discomfort. Since there are no signs of infection, pain, or other symptoms, the tooth can be observed over time to ensure that it remains stable. If symptoms develop or if follow-up X-rays indicate any changes that warrant action, then appropriate measures can be taken, such as retreatment or surgical intervention.

Monitoring with follow-up X-rays is a proactive approach, allowing for changes in the tooth's condition to be assessed without immediate invasive action. This strategy balances the need for caution with the understanding that not all instances of cement extrusion necessitate remedial action, especially when symptomatic issues are absent.