The radiographic evaluation of 11 different resin composites

Abstract

Radiopacities of dental materials used in restorations are very important in making the radiographic diagnosis. Therefore, the aim of our study was to evaluate the radiopacity of fve single-shade and six simplishade resin composites with digital technique. Five diferent single-shade (Charisma Topaz One, Omnichroma, Clearfl Majesty ES-2 Universal, Vittra APS Unique, ZenChroma) and six diferent simplishade resin composites (G-aenial A’CHORD, Essentia Universal, OptiShade, Estelite Asteria, Filtek Universal, Filtek Z250) were used. For each group, fve disk-shaped resin composites of 1 mm and 2 mm thicknesses were prepared. As a control, tooth slices with 1 mm and 2 mm thicknesses and a 99.5% pure aluminum step-wedge were used. The samples, tooth slices, and a step-wedge were placed on a photostimulable phosphor plate. Digi tal radiographs were taken from 30 and 40 cm distances (70 kVp, 7 mA 0.28 ms). The images were analyzed using ImageJ software to measure the mean gray values. Data were analyzed using SPSS 22 package program and Kruskal–Wallis H Test (p<0.05). The highest radiopacity was seen in Filtek Universal at both distances and thicknesses. Omnichroma had the lowest radiopacity in all parameters. All specimens showed higher radiopacity than dentin. Except for Omnichroma 1 and 2 mm thick, Clearfl Majesty ES-2 Universal 2 mm thick, samples showed higher radiopacities than enamel (p<0.05). The restorative materials tested were found to be more radiopaque than dentin. The samples passed the International Organiza tion for Standardization for radiopacity values. The radiopacity values were afected by thickness and type of materials.