Evaluation of 2- and 3-dimensional anatomic parameters of C-shaped root canals with cone beam computed tomography, microcomputed tomography, and nanocomputed tomography

Miguel Angel Ventura Molina; Giovane Oliveira Silva; Amanda Pelegrin Candemil; Rafael Verardino de Camargo; Ruben Pauwels; Reinhilde Jacobs; Manoel Damião Sousa-Neto; Jardel Francisco Mazzi-Chaves

doi:10.1016/j.oooo.2023.07.005

Evaluation of 2- and 3-dimensional anatomic parameters of C-shaped root canals with cone beam computed tomography, microcomputed tomography, and nanocomputed tomography

Oral Surg Oral Med Oral Pathol Oral Radiol. 2023 Dec;136(6):759-768. doi: 10.1016/j.oooo.2023.07.005. Epub 2023 Jul 11.

Authors

Miguel Angel Ventura Molina¹, Giovane Oliveira Silva¹, Amanda Pelegrin Candemil¹, Rafael Verardino de Camargo¹, Ruben Pauwels², Reinhilde Jacobs³, Manoel Damião Sousa-Neto¹, Jardel Francisco Mazzi-Chaves⁴

Affiliations

¹ Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil.
² OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven, University Hospitals Leuven, Leuven, Belgium; Department of Radiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand; Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.
³ OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven, University Hospitals Leuven, Leuven, Belgium; Department of Dental Medicine, Karolinska Institutet, Stockholm, Sweden.
⁴ Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Sao Paulo, Brazil. Electronic address: jardel.chaves@usp.br.

PMID: 37580223
DOI: 10.1016/j.oooo.2023.07.005

Abstract

Objective: The objective of this study was to evaluate 2-dimensional (2D) and 3D morphometric parameters of C-shaped root canals on cone beam computed tomography (CBCT) and microcomputed tomography (microCT) images using nanocomputed tomography (nanoCT) as the reference standard.

Study design: Sixty mandibular molars with C-shaped canals were individually scanned using nanoCT and microCT. Cone beam computed tomography acquisitions were then performed with 4 CBCT systems, using high and standard resolutions. The 2D parameters of roundness and major and minor diameters were obtained in the cross sections of the root canals at 1, 2, and 3 mm from the root apex. The 3D parameters of surface area, volume, and structure model index were measured considering the entire extension of the root canals. Absolute error (AE) in measurement was calculated against the nanoCT values. Data were statistically analyzed with the Shapiro-Wilk test and analysis of variance (α = 0.05).

Results: No significant differences in AE were discovered for the 2D parameters among microCT and the CBCT scans. The AE values for the 3D parameters of volume and surface area were significantly smaller in microCT compared to all CBCT units (P < .05). Significantly lower AE values for surface area were observed in high resolution compared to standard resolution for all CBCT units (P < .05). Structure model index did not differ significantly among microCT and all CBCT protocols.

Conclusions: Cone beam computed tomography images showed accuracy for evaluating 2D parameters and over- and underestimation for 3D parameters.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cone-Beam Computed Tomography* / methods
Dental Pulp Cavity* / diagnostic imaging
Humans
Mandible / diagnostic imaging
Molar / diagnostic imaging
Tooth Root
X-Ray Microtomography