Differences in Aluminum Equivalent Values of Endodontic Sealers: Conventional Versus Digital Radiography

Baksı, B. Güniz; Şen, Bilge Hakan; Eyüboğlu, Tan Fırat

doi:10.1016/j.joen.2008.06.004

Cited by 29 publications

(44 citation statements)

References 17 publications

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“…In a recent study comparing the radiopacity measured with a digital system (radiographic density) and with a photodensitometer (optical density), Baksi et al (25) concluded that the use of a digital system for the measurement of radiographic density is a viable option for analysis of the radiopacity of endodontic materials. The methodology used in the present study is simple and accessible, whereas the use of a photodensitometer for the analysis of radiopacity of the materials in relation to the optical density requires the use of more expensive equipment (26).…”

Section: Discussionmentioning

confidence: 99%

Radiopacity of Portland Cement Associated With Different Radiopacifying Agents

Duarte¹,

Kadre²,

Vivan

et al. 2009

Journal of Endodontics

175

150

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Section: Discussionmentioning

confidence: 99%

Radiopacity of Portland Cement Associated With Different Radiopacifying Agents

Duarte¹,

Kadre²,

Vivan

et al. 2009

Journal of Endodontics

175

150

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“…On the other hand, it has been stated that the aluminum equivalent values that had been obtained using the conventional method were 7 -20% higher than those obtained using digital radiography (37). Further studies are therefore required to determine the most convenient and accurate method.…”

Section: Contextmentioning

confidence: 96%

Radiopacity of Dental Materials: An Overview

Pekkan¹

2016

Avicenna J Dent Res

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Context: This study aimed to provide an overview of the literature on the radiopacity of dental materials in order to emphasize its importance. Evidence Acquisition: English-language literature was investigated using manual and electronic searches for the terms "radiopacity," "dental material," "cement," "composite," "ceramic," "endodontic root canal sealer," "bone graft," and "acrylic resin" in the databases of Medline, google scholar, and Scopus up to April 2016. Seventy-nine selected publications, including review articles, original articles, and books, were evaluated. Results: The radiopacity of different dental materials may be lower or higher than that of the replaced tissue depending on the restorative material used. The research revealed that highly-radiopaque materials should not be used in dental restorations, except as bone graft and endodontic root canal filling materials. For most of the dental restorative materials, moderate radiopacity within the range of the replaced dental tissue is recommended. However, the lower radiopacity of polymer-based restorative or prosthetic dental materials is still a significant clinical problem. Conclusions:The author recommends using highly-radiopaque materials whenever possible for treatment of bone defects and root canals. For dental materials that replace clinical crowns, the radiopacity should be within the range of that of the replaced tooth structure (dentin or enamel). The radiopacity of dental cements should be much higher than that of the enamel in order to facilitate detection of the thin cement remnants.

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“…Several studies reported on the radiopacity of restorative resins or root canal sealants using the aluminum equivalent thickness using film or digital systems [9][10][11][12][13]. In 1999, Watt and McCabe [3] reported that the radiopacity of aluminum varied with the composition of the alloy used, even when the purity of the aluminum in question exceeded 98%, in accordance with the ISO recommendations.…”

Section: Discussionmentioning

confidence: 94%

“…It allows the resin to be seen on radiographs, enabling the dentist to assess restorations [2]. To measure the radiopacity of restorative resins and root canal sealers, various procedures were proposed [2,[9][10][11][12][13]]. An aluminum equivalent value determined independently of beam quality has long been used, although there are many error factors involved in obtaining the aluminum equivalent value.…”

Section: Discussionmentioning

confidence: 99%

A measure for quantifying the radiopacity of restorative resins

et al. 2010

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Objective To evaluate the utility of the X-ray attenuation coefficient as a measure for quantifying the radiopacity of restorative resins at different exposure times and film speeds. Materials and methods Five restorative resins were made into disks, measuring 10 mm in diameter with thicknesses of 0.5, 1.0, 1.5, 2.0, and 2.5 mm. These resin disks, an aluminum step wedge, and a lead disk were placed on size 4 Ultraspeed Ò D and Insight Ò E/F films. X-ray parameters were 65 kVp, 10 mA, and 30-cm focus-to-film distance. Exposure times were 0.3, 0.15, and 0.10 s for the D-speed films and 0.15, 0.10, and 0.05 s for the E/F-speed films. At each exposure setting, three D-and E/F-speed films were exposed and processed immediately with an automatic processor. The optical density was measured with a transmission densitometer. The net optical density (D) was used to calculate the linear attenuation coefficients (l) using lnD = -lx ? lnD 0 , where D and D 0 denote the optical density of the specimen and background, respectively. Results The linear attenuation coefficients (mm -1 ) of the five restorative resins were 0.24-0.27 for Sorare Ò , 0.30-0.34 for Estelite Ò , 0.36-0.39 for Gradia Ò , 0.51-0.54 for Clearfil AP-X Ò , and 0.52-0.56 for Beautifil Ò . These were all higher than that of dentin (0.15-0.19). There was no significant difference in the attenuation coefficients at different exposure times or film speeds. Conclusions Attenuation coefficients can be used instead of aluminum wedges of equivalent thickness to quantify the radiopacity of restorative resins.

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Differences in Aluminum Equivalent Values of Endodontic Sealers: Conventional Versus Digital Radiography

Cited by 29 publications

References 17 publications

Radiopacity of Portland Cement Associated With Different Radiopacifying Agents

Radiopacity of Portland Cement Associated With Different Radiopacifying Agents

Radiopacity of Dental Materials: An Overview

A measure for quantifying the radiopacity of restorative resins

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