Hi, Good Morning
This is called Interdental Caries. One of the most common types of decay. There are different techniques for restoring a tooth using composite restoration. From what description you have just provided, this seems relatively a routine task. We have restored teeth with much bigger cavities.
Please share an X ray if it’s available.
Alternatively, visit Oraliah Dental Clinics, Sahakar Nagar for a immediate review and solution for the same.
Next Steps
No indication for RCT as there is no pain or discomfort mentioned. Only solution is to complete the filling.
Health Tips
Maintain the interdental area using floss and mouthwash until such time the filling is done