Broken Instrument Removal from Mandibular First Molar with Conebeam Computed Tomography based Pre-operative...

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Separated intracanal instruments, particularly nickel-titanium files, impede effective root canal therapy.
• Incomplete cleaning and shaping due to separated instruments can compromise endodontic treatment success.

Observation:

• A case report details the retrieval of a separated instrument from the middle third of a mesiobuccal root canal (tooth #30).
• Techniques employed included cone-beam computed tomography (CBCT) for preoperative simulation, a micro-trepan bur and micro-tube from the Micro-Retrieve & Repair system, and a dental operating microscope.

Findings:

• Successful retrieval of the separated nickel-titanium file was achieved.
• The treated tooth (#30) was subsequently cleaned, shaped, and obturated, followed by coronal restoration.
• At a three-year follow-up, the tooth remained asymptomatic with no radiographic evidence of complications.

Implications:

• This case highlights the efficacy of computer-assisted technology in managing endodontic complications.
• The combination of advanced retrieval techniques and meticulous root canal therapy can lead to favorable long-term treatment results.
• Demonstrates the potential of integrating advanced technologies for improved endodontic treatment outcomes.