This study aimed to assess and compare the radiopacity of various computer-aided design/computer-aided manufacture (CAD/CAM) restorative blocks and adhesive resin cements using digital radiography. A total of six CAD/CAM ceramic and hybrid blocks—Incoris TZI, IPS e.max CAD, Vita Mark II, Cerasmart, Vita Enamic, and Vita Suprinity—and four adhesive resin cements—Panavia F2.0, Variolink Esthetic DC, RelyX Unicem Aplicap, and G-CEM LinkAce—were evaluated. Additionally, a human tooth section with a thickness of 1 ± 0.2 mm was included as a biological reference. All specimens were prepared into 1 ± 0.2 mm thick sections and imaged using a photostimulated phosphor plate system under standardized conditions: 70 kVp, 7 mA, 0.3 s exposure time, and a 30 cm source-to-film distance. An aluminum step wedge with 10 steps of 1 mm increments served as the calibration standard. Gray level values from regions of interest (50 × 50 pixels) were measured using ImageJ software, and radiopacity was calculated in millimeters of aluminum equivalent (mm Al). The results showed significant differences among materials (p < 0.001). Incoris TZI exhibited the highest radiopacity (4.103 mm Al), followed by Variolink Esthetic DC (3.417 mm Al), while Vita Enamic had the lowest value (0.823 mm Al), which was not significantly different from dentin. Among the cements, Variolink Esthetic DC demonstrated the highest radiopacity, significantly surpassing enamel and dentin, whereas G-CEM LinkAce showed lower radiopacity than dentin. Notably, all tested materials except Cerasmart and Vita Enamic had radiopacity equal to or greater than dentin, meeting ISO standards. The findings suggest that most CAD/CAM materials and resin cements provide sufficient radiopacity for clinical diagnosis, enabling accurate detection of marginal gaps, cement overhangs, and secondary caries. Clinically, selecting restorative materials with adequate radiopacity is essential for long-term monitoring and diagnostic accuracy.ZAP-70 Antibody In Vivo When using low-radiopacity CAD/CAM blocks, higher-radiopacity cements are recommended to enhance visibility on radiographs.CD319 Antibody In Vitro This study supports the use of digital radiography for reliable radiopacity assessment and emphasizes the importance of material selection based on radiographic visibility, biocompatibility, and esthetics.PMID:34384877
Keywords: Radiopacity; Adhesive resin cements; CAD/CAM; Restorative materialsMedChemExpress (MCE) offers a wide range of high-quality research chemicals and biochemicals (novel life-science reagents, reference compounds and natural compounds) for scientific use. We have professionally experienced and friendly staff to meet your needs. We are a competent and trustworthy partner for your research and scientific projects.Related websites: https://www.medchemexpress.com