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Abdollahi et. al Diagnostic Accuracy of Different Devices and Settings of …

Table 1. Newtom radiographic indicators in the diagnosis of broken file inside the root canal in the present study

Newtom CBCT device + -
The file is 15 3
The file is not 2 16

recognizing broken files. The accuracy of with a break were identified as positive. A
Newtom radiography in detecting a broken file positive predictive value of about 94.11% was
within the root canal was approximately achieved, meaning a broken file was favorably
88.88%, indicating that out of every 100 files detected in 94.11 out of every 100 cases
without a fracture, 88.88 were correctly submitted for diagnosis. The negative predictive
classified as negative. Furthermore, about value was about 89.47%, indicating that out of
83.33% of the files with a break were correctly every 100 files submitted for detection without
identified as positive. A positive predictive breakage, 89.47 were identified as negative
value of around 88.23% was recorded, showing (unbroken) (Table 2).
that in 88.23 out of every 100 cases, the broken Table 3 presents a comparative analysis of the
file was favorably detected. For files without indexes for the two CBCT devices utilized in this
breakage, a negative predictive value of study—Newtom and Vatech.
approximately 84.21% was achieved, with There was no significant difference between the
84.21 out of every 100 files accurately two devices in identifying a broken file inside
diagnosed as unbroken. the root canal. However, from a clinical
Vatech CBCT markers for identifying broken perspective, the Vatech CBCT device exhibited
files inside the root canal are displayed in Table higher percentages for markers of accuracy,
2. Truly negative images were correctly specificity, sensitivity, and positive and negative
identified as negatives, and truly positive predictive value compared to the Newtom CBCT
images were identified as positives in 91.66% of device (Table 3). Although these differences are
cases by the Vatech CBCT device. Specificity in clinically important, they were not statistically
detecting a broken file within the root canal was significant.
approximately 94.44%, indicating that about
94.44% of 100 files without a break were Discussion
recognized as negative. Accuracy in identifying In the current investigation, we evaluated the
a broken file within a root canal was around accuracy, specificity, sensitivity, and predictive
88.88%, meaning roughly 88.88% of 100 files values of the two CBCT devices, Newtom and

73 Summer And Autumn 2024; Vol. 36, No. 3-4