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. 2022 Oct;38(4):452-458.
doi: 10.1007/s11282-021-00573-z. Epub 2021 Oct 9.

Digital file format does not influence the radiographic diagnosis of vertical root fracture

Murilo Miranda-Viana  1 , Rocharles Cavalcante Fontenele  2 , Amanda Farias Gomes  1 , Fernanda Nogueira-Reis  1 , Yuri Nejaim  3 , Matheus L Oliveira  1 , Deborah Queiroz Freitas  1
Affiliations

Digital file format does not influence the radiographic diagnosis of vertical root fracture

Murilo Miranda-Viana et al. Oral Radiol. 2022 Oct.

Abstract

Objective: To evaluate the influence of the file format of digital periapical radiographs on the diagnosis of vertical root fracture (VRF).

Study design: Periapical radiographic images of 34 single-rooted teeth-19 with VRF, and 15 without VRF were acquired using two digital systems-Digora Toto, and Digora Optime, and exported into four different file formats-TIFF, BMP, PNG, and JPEG, totaling 272 radiographs. The radiographs were assessed by five examiners for the detection of VRF, using a 5-point scale (1-definitely absent; 2-probably absent; 3-uncertain; 4-probably present; 5-definitely present). Diagnostic values of area under the ROC curve, specificity, and sensitivity for the diagnosis of VRF were calculated. The results were compared by two-way Analysis of Variance with post hoc Tukey's test. The intra- and inter-examiner agreements were measured by the Kappa test. The significance level was set at 5% for all analyses.

Results: The values of intra-examiner agreement varied from moderate (0.56) to almost perfect (0.81), while the values of inter-examiner agreement varied from fair (0.29) to moderate (0.60). The image file format did not influence the diagnostic values for VRF for any of the radiographic systems tested (p > 0.05). Digora Toto had significantly greater values of area under the ROC curve than Digora Optime for all file formats (p = 0.001).

Conclusion: The image file format of periapical radiographs does not influence the diagnosis of VRF, regardless of the digital radiography system.

Keywords: Dental digital radiography; Diagnostic imaging; Tooth fractures.

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Conflict of interest statement

The authors declare that they have no conflict of interest.

Figures

Fig. 1
Fig. 1
Radiographic images of the control group (without vertical root fracture) in different image file formats, for the two intraoral digital systems
Fig. 2
Fig. 2
Radiographic images of the experimental group (with vertical root fracture) in different image file formats, for the two intraoral digital systems
Fig. 3
Fig. 3
ROC curves comparing different image file formats (TIFF, BMP, PNG, and JPEG) within each digital radiographic system (Digora Toto and Digora Optime)
See this image and copyright information in PMC

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