Assessment of the Root Filling Volume in C-shaped Root Canal on Cone-beam CT and Micro-CT in Relation to Nano-CT

Overview

Journal Clin Oral Investig

Specialty Dentistry

Date 2023 Sep 13

PMID 37704914

Authors

Amanda Pelegrin Candemil

Jardel Francisco Mazzi-Chaves

Matheus Lima Oliveira

Guilherme Bovi Ambrosano

Karla Farias Vasconcelos

Ruben Pauwels

Reinhilde Jacobs

Manoel Damiao Sousa-Neto

Affiliations

Soon will be listed here.

Abstract

Aim: To assess the observed volume of filled C-shaped root canals from different CBCT and micro-CT having nano-CT as a reference.

Materials And Methods: Twelve extracted mandibular molars with C-shaped root canals were endodontically treated using Reciproc Blue R25 (VDW GMBH, Munich, Germany) in a reciprocating system and filled with gutta-percha (Dentsply Maillefer) and AH Plus sealer (Dentsply DeTrey, Konstanz, Germany). CBCT scans were performed using 3 units-3D Accuitomo 170 (J. Morita, Kyoto, Japan), ProMax 3D Max (Planmeca, Helsinki, Finland), and NewTom VGi EVO (Cefla QR, Verona, Italy)-at two resolution modes: standard and high. Micro-CT and nano-CT scans were also obtained. The volume of all filled C-shaped root canals was obtained using CTAn software (Bruker, Kontich, Belgium), and the blooming artifact, in relation to nano-CT volume, was calculated. The data were evaluated by the Bland-Altman plots and ANOVA two-way for repeated measures (α = 0.05).

Results: All CBCT units and micro-CT showed significantly larger observed volume of root canal filling when compared to nano-CT. The blooming artifact of root canal filling in standard resolution was significantly larger than that in high resolution (p < 0.05) in all CBCT units.

Conclusions: Endodontic filling material with AH Plus sealer causes blooming artifacts in CBCT units and micro-CT.

Clinical Relevance: Considering the anatomical complexity of C-shaped root canals and the challenges associated with endodontic treatment, CBCT is frequently recommended for follow-up evaluations. However, the presence of endodontic filling material can result in blooming artifacts that may potentially impact the accurate diagnosis of endodontic complications.

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