Detection of approximal caries with a storage phosphor system. A comparison of enhanced digital images with dental X-ray film.

Møystad, Anne; Svanaes, D B; Risnes, Steinar; Larheim, Tore A.; Gröndahl, Hans‐Göran

doi:10.1259/dmfr.25.4.9084274

Cited by 106 publications

(75 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2,3 Studies comparing the performance of SPP systems with that of conventional film and charge-coupled device (CCD) systems have reported similar or better image quality with SPPs. 4,5 However, a major shortcoming of the SPP system is the handling and scanning of plates prior to the final viewing of the image.…”

Section: Introductionmentioning

confidence: 99%

The effect of delayed scanning of storage phosphor plates on occlusal caries detection

Soğur¹,

Baksı²,

Mert³

2012

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

Objective: The aim of this study was to determine (1) the effect of various scan delays on pixel intensity measurements and (2) the diagnostic accuracy of occlusal caries detection. Methods: 72 non-cavitated extracted human permanent molar teeth with sound and carious occlusal surfaces were radiographed using the DIGORAH storage phosphor plates (SPPs) (Soredex Corporation, Helsinki, Finland). Plates were scanned immediately and 10 min, 30 min, 60 min and 120 min after exposure. Three different plates were used for each scan delay. An aluminium (Al) wedge was used to evaluate the change in mean grey values (MGVs) for scan delays. Diagnostic accuracy for occlusal caries detection was performed by scoring all the digital images. The true presence of caries was determined by stereomicroscopy. Comparison of MGVs of the Al wedge for immediate and delayed scans was made using repeated measures analysis of variance (ANOVA) and Tukey-Kramer tests. The accuracy was expressed as the area under the receiver operating characteristics curves (A z ). A z s were compared using two-way ANOVA and t-tests. Kappa was used to measure inter and intraobserver agreement. Results: The mean A z s of immediately scanned plates were higher than the A z s of plates scanned with four different delays (p , 0.05). The A z of immediately scanned images was significantly higher than the A z s of images with 60 min and 120 min scan delays (p , 0.05) but not for 10 min and 30 min delays (p . 0.05). MGVs of immediately scanned plates were significantly higher than the plates scanned with four different delays (p , 0.05). Agreement decreased with increasing scan delays. Conclusion: Scanning of DIGORA SPPs should not be delayed beyond 30 min for accurate occlusal caries diagnosis.

show abstract

Section: Introductionmentioning

confidence: 99%

The effect of delayed scanning of storage phosphor plates on occlusal caries detection

Soğur¹,

Baksı²,

Mert³

2012

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

show abstract

“…Theoretically, for digital images, the resolution power is a function of pixel size, and the small pixel size of CCD-based radiographic images should result in better image quality, as it has already been discussed by other authors 8,14 . It is also known that, as the pixel size decreases, the noise level relative to the signal increases 14 .…”

Section: Discussionmentioning

confidence: 78%

“…The demands for radiographic image sharpness are greater during the diagnosis of enamel subsurface demineralization, which in turn highlight the differences between conventional and digitized radiographs. Besides, the process of digitization has been demonstrated to add physical noise to the radiographic image 8,17 . Noise is an important factor when determining image quality, and it may have an impact on the conspicuousness of small caries lesions 6 .…”

Section: Discussionmentioning

confidence: 99%

Assessment of enamel demineralization using conventional, digital, and digitized radiography

Ferreira¹,

Haiter-Neto²,

Tabchoury³

et al. 2006

Braz. oral res.

View full text Add to dashboard Cite

This experimental research aimed at evaluating the accuracy of enamel demineralization detection using conventional, digital, and digitized radiographs, as well as to compare radiographs and logarithmically contrast-enhanced subtraction images. Enamel subsurface demineralization was induced on one of the approximal surfaces of 49 sound third molars. Standardized radiographs of the teeth were taken prior to and after the demineralization phase with three digital systems -CygnusRay MPS  , DenOptix  and DIGORA  -and InSight  film. Three radiologists interpreted the pairs of conventional, digital, and digitized radiographs in two different occasions. Logarithmically contrast-enhanced subtraction images were examined by a fourth radiologist only once. Radiographic diagnosis was validated by cross-sectional microhardness profiling in the test areas of the approximal surfaces. Accuracy was estimated by Receiver Operating Characteristic (ROC) analysis. Chi-square test, at a significance level of 5%, was used to compare the areas under the ROC curves (A z ) calculated for the different imaging modalities. Concerning the radiographs, the DenOptix  system (A z = 0.91) and conventional radiographs (A z = 0.90) presented the highest accuracy values compared with the other three radiographic modalities. However, logarithmically contrast-enhanced subtraction images (A z = 0.98) were significantly more accurate than conventional, digital, and digitized radiographs (p = 0.0000). It can be concluded that the DenOptix  system and conventional radiographs provide better performance for diagnosing enamel subsurface demineralization. Logarithmic subtraction significantly improves radiographic detection. DESCRIPTORS: Dental enamel; Demineralization; Radiography; Diagnosis. RESUMO:O objetivo desta pesquisa experimental foi investigar a acurácia da detecção de desmineralizações em esmalte por meio de radiografias convencionais, digitais e digitalizadas, e compará-las às imagens por subtração logarítmica. Foram induzidas desmineralizações subsuperficiais no esmalte de uma das faces proximais de 49 dentes terceiros molares hígidos. Radiografias padronizadas dos dentes foram obtidas antes e após a fase de desmineralização com o emprego de três sistemas digitais -CygnusRay MPS  , DenOptix  e DIGORA  -bem como do filme InSight  . Três radiologistas interpretaram os pares de radiografias convencionais, digitais e digitalizadas, em duas ocasiões diferentes. As imagens por subtração logarítmica foram avaliadas por um quarto radiologista apenas uma vez. O diagnóstico radiográfico foi validado pela mensuração da microdureza do esmalte seccionado longitudinalmente, nas áreas-teste das faces proximais. A acurácia foi estimada pela análise "Receiver Operating Characteristic" (ROC). Aplicou-se o teste Qui-Quadrado, em um nível de significância de 5%, para comparar as áreas sob as curvas ROC (A z ) das diferentes modalidades de imagens radiográficas. Em se tratando das radiografias, o sistema DenOptix  (A z = 0,91) e as radiografi...

show abstract

“…Research on digital images was primarily powered with CCD and SPIP resolution, noise formation, density scale, compression of files, and potential effects on clinical diagnosis [10][11][12] . Up to now, few studies have investigated digital systems for the evaluation of composite resin radiopacities 13,14 .…”

Section: Introductionmentioning

confidence: 99%

Radiopacity assessment of composite resins through digital systems and InSight intraoral film

Flores

Neto²,

Bóscolo³

et al. 2014

Rev. da Fac. de Odontologia, UPF

View full text Add to dashboard Cite

Detection of approximal caries with a storage phosphor system. A comparison of enhanced digital images with dental X-ray film.

Abstract: Enhancement of storage phosphor images improved detection of approximal caries in this in vitro study compared with unenhanced images and Ektaspeed film.

Cited by 106 publications

References 18 publications

The effect of delayed scanning of storage phosphor plates on occlusal caries detection

The effect of delayed scanning of storage phosphor plates on occlusal caries detection

Assessment of enamel demineralization using conventional, digital, and digitized radiography

Radiopacity assessment of composite resins through digital systems and InSight intraoral film

Contact Info

Product

Resources

About