Instrument retrieval using ultrasonics and minimally invasive guided endodontics using AReneto^® system: a case report

Area of Science:

• Endodontics
• Dental Technology
• Minimally Invasive Dentistry

Background:

• Instrument separation in the apical third of root canals is a common challenge.
• Retrieving separated instruments and performing subsequent treatments can be complex, often requiring prosthesis removal.
• Augmented reality (AR) offers potential solutions for complex endodontic procedures.

Purpose of the Study:

• To report a case of successful retrieval of a separated instrument using ultrasonics.
• To demonstrate the use of AR (AReneto system) for minimally invasive guided access through a dental prosthesis for root canal treatment.
• To evaluate the outcome of this combined approach.

Main Methods:

• A patient with a separated instrument in the apical third of tooth 33 underwent ultrasonic retrieval.
• Root canal treatment on tooth 32 was performed using the AReneto system for guided access through an existing porcelain-fused-to-metal bridge.
• Procedures were performed under magnification, with AR guiding the access opening.

Main Results:

• Successful retrieval of the separated instrument from tooth 33.
• Minimally invasive root canal treatment on tooth 32 was completed without removing the prosthesis.
• At 6-month follow-up, the patient was asymptomatic with radiographic evidence of healing.

Conclusions:

• Ultrasonics and magnification are effective for separated instrument retrieval.
• The AReneto system enables precise, minimally invasive endodontic access through existing prostheses.
• AR technology shows promise for enhancing precision and preserving tooth structure in endodontics.