Effect of delayed scanning on imaging and on the diagnostic accuracy of vertical root fractures in two photostimulable phosphor plates digital systems

Nascimento, Helena Aguiar Ribeiro do; Visconti, Maria Augusta Portella Guedes; Ferreira, Liana Matos; Suárez, Miguel Ángel; Haiter-Neto, Francisco; Freitas, Deborah Queiroz

doi:10.1111/iej.12547

Cited by 9 publications

(11 citation statements)

References 27 publications

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“…An increase in the pixel values was previously reported in PSP receptors that had a delay in their scanning process 17 . This aspect could compromise the present study results.…”

Section: Discussionsupporting

confidence: 64%

Could the radiographic image quality be affected by the excessive use of the photostimulable phosphor plate?

et al. 2023

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The study aimed to assess the influence of excessive use of a photostimulable phosphor plate (PSP) on the density, image noise, and contrast of radiographs. For that, radiographs of an acrylic block were acquired with a PSP of the Express intraoral system to assess the density and image noise. Initially, five images were obtained and exported (first group). After 400 exposures to X-rays and scannings of PSP, other five images were obtained and exported (second group). The same procedure was done after 800 (third group), 1200 (fourth group), 1600 (fifth group), and 2000 acquisitions (sixth group), resulting in 30 images to be evaluated. The mean and standard deviation of the gray values were calculated for the images using the ImageJ software. For contrast analysis, radiographs of an aluminum step-wedge were acquired with a new PSP following the same acquisition intervals. The percentage of contrast variation was calculated. Another two unused PSP receptors were employed to evaluate the method’s reproducibility. The comparison of the results among the acquisition groups was performed with one-way Analysis of Variance (α=0.05). Intraclass Correlation Coefficient (ICC) assessed the reproducibility of the receptors. Image noise did not differ among the groups (p>0.05). There was a slight increase in density after 400 acquisitions and a slight difference in contrast for all acquisition groups without a pattern of increase or decrease (p<0.05). ICC showed excellent reliability for the methods. Therefore, excessive PSP use slightly affected the radiograph’s density and contrast.

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“…An increase in the pixel values was previously reported in PSP receptors that had a delay in their scanning process 17 . This aspect could compromise the present study results.…”

Section: Discussionsupporting

confidence: 64%

Could the radiographic image quality be affected by the excessive use of the photostimulable phosphor plate?

et al. 2023

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“…Regarding image acquisition, PSPs require scanning for imaging assessment. Therefore, a decrease in image quality may occur over time or secondary to exposure to ambient light through the electron decay of PSP' traps in higher energy states 14 . The VistaScan and Express systems (PSPs) are capable of producing high-quality images, even if they are manipulated in bright rooms.…”

Section: Discussionmentioning

confidence: 99%

“…The VistaScan and Express systems (PSPs) are capable of producing high-quality images, even if they are manipulated in bright rooms. However, if these images are evaluated objectively, the result of incorrect handling can be quantified 14 . Nevertheless, PSPs spontaneously release captured electrons over time and attention must therefore be paid to the scanning process 14 .…”

Section: Discussionmentioning

confidence: 99%

“…However, if these images are evaluated objectively, the result of incorrect handling can be quantified 14 . Nevertheless, PSPs spontaneously release captured electrons over time and attention must therefore be paid to the scanning process 14 . To avoid these biases, we exposed the plates to X-rays and scanned them immediately in a room with little light.…”

Section: Discussionmentioning

confidence: 99%

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Efficacy of digital radiographic systems in the quality assessment of intracanal materials used for primary teeth

Ferreira¹,

Melo²,

Nadaes³

et al. 2019

Braz. J. Oral Sci.

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Aim: To evaluate the performance of three digital radiographic systems in the analysis of root canal filling quality using different intracanal materials for primary teeth. Methods: Twenty-five bovine teeth were divided into 5 groups: Calen® combined with iodoform; Calen® combined with zinc oxide; zinc oxide and eugenol; UltraCal®XS, and 2% chlorhexidine combined with Ca(OH)2 + zinc oxide. Periapical radiographs were obtained with the VistaScan, Express, and SnapShot systems. The quality of the images was evaluated objectively (radiopacity) and subjectively (apical sealing and filling homogeneity). As the reference standard, the teeth were scanned with a micro-CT device. Results: Radiopacity differed among the radiographic systems and materials tested. In general, the greatest difference was observed between the Express and VistaScan systems; Calen® combined with iodoform resulted in the highest radiopacity. The radiographic systems did not differ in terms of homogeneity. However, Calen® combined with iodoform differed from the other materials and exhibited the best results. Regarding apical sealing, the SnapShot system and Calen® combined with zinc oxide provided the best results. Conclusion: Direct digital systems show better performance in evaluating the quality of endodontic treatment in primary teeth and should be preferred for this purpose.

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“…The PSP is then scanned using a highspeed laser, and the resulting light emitted by the stimulated phosphor is digitized and converted into a displayable image. 1 Historically, the first PSP was patented in 1975 (Eastman Kodak Co., Rochester, EUA), and the first PSP system was commercialized in 1981 by Fuji Photo Film (Tokyo, Japan). 2,3 However, PSP receptors were introduced in the dental field only in 1994 (Digora, Soredex Finndent, Orion Corporation Ltd, Helsinki, Finland), 4,5 emerging as an alternative to intraoral radiographic films 3 and solid-state detectors.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the microstructure, chemical composition, and image quality of different PSP receptors

et al. 2022

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This study aimed to assess the microstructure, chemical composition, and image quality of different photostimulable phosphor plates (PSP). Four PSP systems, Express ® , Digora ® , VistaScan ® , and Apixia, ® were assessed. Five radiographs of a homogeneous acrylic phantom were obtained with the PSP of each system, to acquire a total of 20 images. The images were objectively evaluated for uniformity using mean grey and standard deviation (SD) of their grey values. PSP receptors were analyzed using scanning electron microscopy (SEM) to determine the thickness of the granule layer and the size of the granules. The chemical composition of the PSP receptors was analyzed using total reflection X-ray fluorescence (TXRF). VistaScan showed more uniform and higher density images than the other tested systems (p < 0.05), as well as the lowest SD of grey values (p < 0.05).Regarding the microstructure of the receptors, Digora and VistaScan had thicker granule layers than Express and Apixia, and VistaScan had smaller granules than Digora and Express (p < 0.05). Fourteen chemical elements were detected in the receptors, with barium being the element with the highest concentration in all PSP systems. The microstructure, chemical composition, and image quality varied among all four PSP receptors studied. VistaScan receptors showed the smallest variation in granule size, one of the thickest granule layers, and the most uniform and least noisy images.

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Effect of delayed scanning on imaging and on the diagnostic accuracy of vertical root fractures in two photostimulable phosphor plates digital systems

Abstract: Whilst delayed scanning caused changes to the density of images acquired with the systems studied, it did not seem to interfere with VRF diagnosis except when scanning was delayed for 4 h, which should therefore be avoided.

Cited by 9 publications

References 27 publications

Could the radiographic image quality be affected by the excessive use of the photostimulable phosphor plate?

Could the radiographic image quality be affected by the excessive use of the photostimulable phosphor plate?

Efficacy of digital radiographic systems in the quality assessment of intracanal materials used for primary teeth

Evaluation of the microstructure, chemical composition, and image quality of different PSP receptors

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