Classification of Impacted Third Molars on Conebeam Computed Tomography Images

Niroula, Deepa; Dahal, Sirjana; Poudel, Kalpana; Singh, Ashutosh Kumar; K.C, Krishna

Publication:
Classification of Impacted Third Molars on Conebeam Computed Tomography Images

creativeworkseries.issn	1999-6217
dc.contributor.author	Niroula, Deepa
dc.contributor.author	Dahal, Sirjana
dc.contributor.author	Poudel, Kalpana
dc.contributor.author	Singh, Ashutosh Kumar
dc.contributor.author	K.C, Krishna
dc.date.accessioned	2025-07-13T07:13:17Z
dc.date.available	2025-07-13T07:13:17Z
dc.date.issued	2025
dc.description	Deepa Niroula Department of Oral Medicine and Radiology, T.U Teaching Hospital, Maharajgunj Medical Campus, Maharajgunj, Kathmandu, Nepal. Sirjana Dahal Department of Community Dentistry, T.U Teaching Hospital, Maharajgunj Medical Campus, Maharajgunj, Kathmandu, Nepal. Kalpana Poudel Department of Oral Medicine and Radiology, T.U Teaching Hospital, Maharajgunj Medical Campus, Maharajgunj, Nepal. Ashutosh Kumar Singh Department of Oral and Maxillofacial Surgery, T.U Teaching Hospital, Maharajgunj Medical Campus, Maharajgunj, Kathmandu, Nepal Krishna K.C Department of Oral and Maxillofacial Surgery, T.U Teaching Hospital, Maharajgunj Medical Campus, Maharajgunj, Kathmandu, Nepal.
dc.description.abstract	Background: An important anatomical factor in injuries to the inferior alveolar nerve is the spatial relationship between the mandibular canal and the corresponding third molars. This study was designed to classify the anatomic three-dimensional relationship between mandibular third molars and the mandibular canal on cone-beam computed tomography mages. Methods: A cross-sectional study was conducted by using CBCT images of 100 individuals visiting the Dental Outpatient Department of X hospital from Jan 2022 – Oct 2022. The images were used to classify the threedimensional relationship between the mandibular canal relative to the roots of the mandibular third molar according to Liqun Gu et al 2018 classification. In this classification, four anatomical positions were considered: buccal, lingual, apical and inter-radicular. The second factor considered was the contact and non-contact relationship between the inferior alveolar nerve canal and the mandibular nerve. The data was analyzed via SPSS version 20. Chi square test was performed to determine the contact relationship of the mandibular third molar root with the mandibular canal. Results: Most of the mandibular canals observed via CBCT (45.0%) were located on the buccal side of the mandibular third molar followed by the apical side (26.0%), between the roots (23.0%) and very few (6.0%) on the lingual side. A significant association was found between the position of the mandibular third molar and the mandibular canal (p<0.001) when the position was lingual and interradicular. Conclusions: The findings of this study revealed that the majority of mandibular third molars were located on the buccal side. There was a significant relationship between the position of the mandibular third molar and the mandibular canal. Keywords: Cone-beam computed tomography; impaction; mandibular canal; third molar.
dc.identifier	https://doi.org/10.33314/jnhrc.v23i01.5607
dc.identifier.uri	https://hdl.handle.net/20.500.14572/135
dc.language.iso	en_US
dc.publisher	Nepal Health Research Council
dc.title	Classification of Impacted Third Molars on Conebeam Computed Tomography Images
dc.type	Article
dspace.entity.type	Publication
local.article.type	Original Article
oaire.citation.endPage	175
oaire.citation.startPage	170
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