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Broken Instrument Removal from Mandibular First Molar with Conebeam Computed Tomography based Pre-operative Computer-assisted Simulation: A Case Report

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creativeworkseries.issnJNMA Print ISSN: 0028-2715; Online ISSN: 1815-672X
dc.contributor.authorPradhan, Babita
dc.contributor.authorGao, Yuan
dc.contributor.authorGao, Yuan
dc.contributor.authorGuo, Tingwei
dc.contributor.authorCao, Yangpei
dc.contributor.authorHe, Jinzhi
dc.date.accessioned2026-02-20T07:10:47Z
dc.date.available2026-02-20T07:10:47Z
dc.date.issued2021
dc.descriptionBabita Pradhan State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China Yuan Gao State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China Yuan Gao State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China Tingwei Guo Center for Craniofacial Molecular Biology, Herman Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, Los Angeles, CA 90033, USA https://orcid.org/0000-0003-4089-1867 Yangpei Cao State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China https://orcid.org/0000-0002-2299-7206 Jinzhi He State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China https://orcid.org/0000-0002-9366-2315
dc.description.abstractAbstract: Intracanal separation of nickel titanium files hinders complete shaping, cleaning, and filling of the root canal system and ultimately influences the endodontic treatment outcome. In this case report, we presented a successful broken instrument retrieval from the middle third of the mesiobuccal root canal of tooth #30 with the assistance of cone-beam computed tomograpgy based preoperative computer-assisted simulation, micro-trepan bur and micro-tube from Micro-Retrieve & Repair system and dental operative microscope. The involved tooth was then successfully cleaned, shaped and obturated followed by coronal restoration. At the three-year follow-up, tooth #30 was asymptomatic and functioned well without radiographic changes. The present case provides an example to show the robustness of computer-assisted technology in dental procedures and to show how the combination of advanced techniques can facilitate root canal therapy.
dc.identifierhttps://doi.org/10.31729/jnma.5231
dc.identifier.urihttps://hdl.handle.net/20.500.14572/4832
dc.language.isoen_US
dc.publisherNepal Medical Association
dc.subjectcone-beam computed tomography
dc.subjectroot canal therapy
dc.subjecttreatment outcome
dc.titleBroken Instrument Removal from Mandibular First Molar with Conebeam Computed Tomography based Pre-operative Computer-assisted Simulation: A Case Report
dc.typeArticle
dspace.entity.typePublication
local.article.typeCase Report
oaire.citation.endPage798
oaire.citation.startPage795
relation.isJournalIssueOfPublication63b8b137-dbcc-4628-92ef-09baf080325d
relation.isJournalIssueOfPublication.latestForDiscovery63b8b137-dbcc-4628-92ef-09baf080325d
relation.isJournalOfPublicatione6e146a0-0ece-4aba-aa0a-6ccfbd10a12a

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