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

Autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY; v. 136, n. 6, p. 10-pg., 2023-12-04.

Resumo

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 (a = 0.05).Results. No significant differences in AE were discovered for the 2D parameters among microCT and the CBCT scans. The AE val-ues 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. (Oral Surg Oral Med Oral Pathol Oral Radiol 2023;136:759-768) (AU)

• Processo FAPESP: 21/01623-8 - Efeito da redução de artefatos gerados por materiais de alta densidade em imagens de tomografia computadorizada de feixe cônico por inteligência artificial no diagnóstico de fratura radicular vertical e perfuração radicular
• Beneficiário: Amanda Candemil Kanashiro
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 20/09242-0 - Avaliação da expressão de artefatos de imagem gerados por diferentes medicações intracanais em tomografia computadorizada de feixe cônico e microtomografia computadorizada
• Beneficiário: Giovane Oliveira Silva
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica