Guided Endodontic Microsurgery (GEMS) is a proven method for failing non-surgically Endodontically retreated teeth. Utilizing magnification, root-end preparation, and root-end filling materials. The practitioner can expect good success rates following this protocol. There are occasions however where endodontic microsurgery may be particularly difficult, such as challenging anatomical features or limited surgical access.
Patent Number: US 2020/0306008 A1