Robot-Assisted Endodontic Retreatment: A Case Report with Clinical Considerations

Area of Science:

• Endodontics
• Robotic Dentistry
• Dental Materials

Background:

• Fiber post removal during endodontic retreatment poses risks like root perforation.
• Active dental robotic (ADR) systems offer precision and reduce reliance on operator experience.

Purpose of the Study:

• To describe the application of an ADR system for fiber post removal through a zirconia crown in a case of endodontic retreatment.

Main Methods:

• Cone-beam computed tomography (CBCT) and intraoral scanning guided ADR system for fiber post removal.
• Minimally invasive coronal access under rubber dam isolation was performed.
• Robotic arm utilized preset force and distance thresholds for material drilling and gutta-percha removal.

Main Results:

• Successful and precise fiber post removal was achieved using the ADR system.
• Subsequent root canal preparation, obturation, and restoration were completed uneventfully.
• The patient remained asymptomatic with radiographic evidence of periradicular healing at 2.5 months.

Conclusions:

• Robotic technology is effective and feasible for endodontic retreatment involving fiber post removal.
• ADR systems show potential for similar applications in teeth with adequate inter-arch space.
• Further research is needed to streamline robot-assisted endodontic retreatment procedures.