A Comparative Evaluation of the Radiopacity of Contemporary Restorative CAD/CAM Blocks Using Digital Radiography Based on the Impact of Material Composition. (21st February 2022)

• Record Type: Journal Article
• Authors: Elhelbawy, Nahla Gamal; Ghouraba, Rehab F; Hasaneen, Fatma A
• Other Names: Fiorillo Luca Academic Editor.
• Is Part Of: International journal of biomaterials. Volume 2022(2022)
• Publication Date: 2022-02-21
• Subjects: Biomedical materials -- Periodicals; Biomedical and Dental Materials; Biomedical materials; Electronic journals; Periodicals; Fulltext; Internet Resources; Periodicals; Periodicals; 610.28
• DOI: 10.1155/2022/4131176
• Languages: English
• ISSNs: 1687-8787

Abstract

Abstract : Purpose . The main purpose of this study was to assess the radiopacity of contemporary restorative computer-aided design (CAD)/computer-aided manufacturing (CAM) materials and the impact of material composition as measured by energy-dispersive X-ray spectrophotometry (EDX) on radiopacity. Materials and Methods . Ten specimens of six CAD/CAM materials with 1 mm thickness were produced and then digitally radiographed with an aluminum (Al) step-wedge (SW) and 1 mm thick tooth slice. The specimen mean gray values (MGVs) were recorded in pixels and compared to an Al-SW, dentin, and enamel of equal thickness. For the elementary analysis of the composition of the materials, EDX was performed. Results . The recorded MGVs ranged between 21.20 ± 4.94 and 238.5 ± 13.61 pixels. Materials were sorted according to the MGVs descendingly, Prettau, Vita Suprinity, Vita Enamic, Shofu, Pekkton, and BioHPP. Prettau and Vita Suprinity had significantly higher MGV than dentin and 1 mm thick Al. In comparison, Vita Enamic had a slightly higher value than dentin and 1 mm thick Al. Although Pekkton and BioHPP had MGV significantly lower than dentin and 1 mm thick Al, Shofu had a significantly lower value than dentin and nonsignificantly lower than 1 mm thick Al ( p < 0.05). According to EDX analysis, the examined materials contained several components in varying quantities of radiopacity. Conclusions . The radiopacity of only three studied materials exceeded the International Organization for Standardization's minimum standards (ISO).