Radiopacity degree of Bulk Fill composite resins

Abstract

ABSTRACT Objective: To verify and compare the radiopacity of four composite resins available in the national market and analyze their compliance with International Standards Organization 4049 guidelines. Methods: Five specimens of each Bulk Fill composite resin were prepared, and radiographs were taken alongside an aluminum step wedge using a digital imaging system. The images were processed using software capable of measuring mean grey values (MGVs), which were then converted to millimeters of aluminum. Statistical analysis was performed (P 0.05). Results: The four tested composite resins showed radiopacity values higher than those of enamel and dentin, standing out the Tetric N-Ceram- Ivoclar Vivadent (11.05 mmAl). All samples are in accord with the ISO 4049 radiopacity standard. The resin Opus Bulk Fill and Tetric N-Ceram were compared to each other, revealing statistically significant differences (p0,05). Conclusion: All materials demonstrated radiopacity values higher than those of dentin and enamel. All samples are in accordance with the International Organization for Standardization 4049 guidelines. More studies should be conducted with the composite resins used in this study due to the limited research involving these specific resins.

Keywords

• Composite resins
• Diagnostic imaging
• Dentistry, operative