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).
Highlights
The key emphasis in dentistry is aesthetics
There are no limits to the types of dental restorations that could be created by clinicians, as a result of the abundance and advancement of computer-aided design (CAD)/computer-aided manufacturing (CAM) technology, systems, milling machines, and other tools
Prettau had the greatest mean gray values (MGVs) and contained zirconium (16.34% ± 1.38), whereas Pekkton and BioHPP had the lowest MGVs and had Al (0.85% ± 0.07) and (0.22% ± 0.07), respectively
Summary
The key emphasis in dentistry is aesthetics. Both patients and dentists are enthusiastic about using tooth-colored materials. For indirect dental restorations such as veneers, inlays, onlays, implant-supported crowns, bridges, and anterior and posterior crowns, CAD/CAM technology has become widespread in dental offices and laboratories [1]. There are no limits to the types of dental restorations that could be created by clinicians, as a result of the abundance and advancement of CAD/CAM technology, systems, milling machines, and other tools. Due to various CAD/CAM blocks, adequate strength requirements, esthetic aspirations, treatment time intervals, and accuracy, dentists face a challenge in selecting the suitable restorative material [3]. Radiopacity has become a popular property in high-quality CAD/CAM materials
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