The root canal anatomy of teeth can be very variable and missed canals are a major cause of failure in root canal treatment. The OPMI tremendously facilitates this important part of endodontic treatment. It plays a vital role in helping to identify accessory canals at whatever level they may be.

Thanks to the improved visualization provided by the OPMI along with microsurgical instruments, endodontic root-end surgery can be performed much more conservatively. The procedure could be considered minimally invasive.

Endodontic re-treatment is considered to be one of the most challenging procedures in endodontics. In these situations the OPMI is essential.