Metal artifact reduction tool and mA levels impact on the diagnosis of fracture extension in endodontically treated teeth using cone-beam CT

Author(s)

Alves, Luisa Valente Gotardo Lara ; Pires, Cassiano Ricardo Ferreira ; Sousa-Neto, Manoel Damiao ; Prado, Heitor Silva ; Mazzi-Chaves, Jardel Francisco ; Candemil, Amanda Pelegrin

• Document type: Journal article
• Source: CLINICAL ORAL INVESTIGATIONS; v. 28, n. 10, p. 10-pg., 2024-09-19.

Abstract

Aim To evaluate the influence of different levels of metal artifact reduction (MAR) tool and milliamperage (mA) on the diagnosis of fracture extension in endodontically treated teeth using cone beam CT (CBCT). Materials and methods Ten maxillary premolars were endodontically treated and positioned in the empty sockets of a human maxilla covered with wax. CBCT acquisitions were performed using the Eagle Edge device (Dabi Atlante, Brazil) adjusted to 120 kVp, FOV of 4 x 6 cm, exposure time of 24 s and voxel size of 0.2 mm in 8 different conditions with different MAR (1, 2 and 3) and mA (3.2 and 6.3) levels. Crown-root fractures were simulated in the universal testing machine, and CBCT images were acquired again. Five radiologists evaluated the presence and extension of fractures with a 5-point scale. Statistical analysis was performed by analysis of variance, Tukey and Kappa test (alpha = 0.05). Results Although different mA levels did not significantly (p > 0.05) affect the diagnosis values for fracture presence and extension, when evaluated the different levels of MAR, AUC and sensitivity showed significantly higher values (p < 0.05) for MAR 0 using 6.3 mA and kappa agreement showed significantly higher values (p < 0.05) for MAR 0 and 2 using 6.3 mA. Conclusions Although mA levels do not have a diagnostic effect when isolating the MAR level; in 6.3 mA, MAR 0 and 2 can positively influence the diagnosis of fracture extension in endodontically treated teeth using CBCT. Clinical relevance The isolate evaluation of dental fracture presence can overlook diagnostics error of its extension. (AU)

• FAPESP's process: 21/01623-8 - Effect of the reduction of artefacts arising from high-density materials on cone-beam CT by artificial intelligence on the diagnosis of vertical root fracture and root perforation
• Grantee: Amanda Candemil Kanashiro
• Support Opportunities: Scholarships in Brazil - Post-Doctoral