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ORIGINAL ARTICLE
Year : 2022  |  Volume : 34  |  Issue : 3  |  Page : 309-313

Comparison of Cone Beam Computed Tomography Performance at Different Voxel Sizes in the Evaluation of Mandibular Canal – An In vitro Study


1 Department of Oral Medicine and Radiology, SRM Dental College and Hospital, Ramapuram, Chennai, Tamil Nadu, India
2 Department of Oral Medicine and Radiology, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
3 Department of Pharmacology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India

Correspondence Address:
Rini Joy
Department of Oral Medicine and Radiology, SRM Dental College and Hospital, Ramapuram Campus, Bharathi Salai, Chennai - 600 089, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jiaomr.jiaomr_244_21

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Background and Aim: Even though cone beam computed tomography (CBCT) imaging is a propitious tool to track the mandibular/ inferior alveolar canal (MC) course, documentation regarding indefectible CBCT imaging strategy for MC localization is sparse. This study aimed to appraise CBCT's functioning at specified voxel sizes for deducing an explicit voxel size setting that simplifies MC evaluation in individual imaging sections. Materials and Methods: CBCT scan of 12 dry human mandibles was produced at 0.5, 0.3, 0.25, and 0.2 mm voxel settings. Two specialists/assessors explored the generated images in coronal (buccolingual) and curved (anterior-posterior) sections. Statistical Analyses: Mann–Whitney U, Kruskal–Wallis, post-hoc Tukey HSD, and Kappa statistics. Results: All voxel specifications revealed appreciable statistical variance; coronal sections comparatively excelled in serving the study objective. Statistical authentication was spotted among voxel sizes 0.5–0.2 mm and 0.5–0.25 mm (both assessors, either section), 0.3–0.2 mm (first specialist, curved), and 0.3–0.5 mm (second specialist, curved). Inter-observer agreement was excellent for voxels 0.25 mm (coronal) and 0.2 mm (curved). Conclusion: Precise voxel setting to trace MC is 0.3 mm and the suitable imaging section is coronal.


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