Clinical Investigation of a Radiopaque Composite Restorative Material

Adhesive restorative materials: A review

“…However, the clinical application of acid etching was not realized until 15 years later when resin composites became available as a result of the work of Bowen's group. 2 In contrast to micromechanical bonding to tooth tissue, chemical bonding was developed by Smith 3 and resulted in the introduction of polycarboxylate cement. water balance of the conventional GICs.…”

Radiopacity of Composite Luting Cements Using a Digital Technique

“…18,21,56 The radiopacity of a resin-based material depends in part on selection of the polymer matrix, the chemical nature of the filler particles, and their size, density, and amount in the resin matrix. 14,15 A study by Pekkan et al showed that resin matrices in luting cements could have influenced the radiopacity. 45 In resin-based materials, barium, yttrium, ytterbium, zinc, aluminium, strontium, and zirconium are additives that increase radiopacity.…”

“…12 Resin cements with multiple shades are available, deriving their shades and opacity from various fillers, 1,13 thereby playing a significant role in their radiopacity. [14][15][16] Resin-based luting cements are available in autopolymerization, light-polymerization, and dualpolymerization formulations. 17 The chemical composition, the amounts of fillers and components of the organic matrix, and the atomic weight of the filler particles may influence the radiopacity of these materials, 11,[18][19][20][21] resulting in a linear correlation between the percentage of fillers and the radiopacity.…”

Radiopacity of different resin-based and conventional luting cements compared to human and bovine teeth

“…Resin composites are typically composed of inorganic fillers dispersed in a resin matrix 10,12) . The radiopacity of a resin-based material depends in part on selection of the polymer matrix, chemical nature of the filler particles, their size, density and an amount in the resin matrix 10,11) . While resin matrices such as bisphenol-A-glycidyl methacrylate (Bis-GMA), urethane dimethacrylate (UDMA), 10-methacryloyloxydecyl dihydrogen phosphate (MDP), triethyleneglycol dimethacrylate (TEGDMA), 2-hydroxyethyl methacrylate (HEMA) contribute little to the radiopacity of the material, it is typically the inorganic filler component that contributes most to the radiopacity of resin-based luting materials 2,18) .…”

“…The color stability and thereby radiopacity of resin-based luting materials is also of great importance. Among many variables that affect the color stability of resin-based restorative materials or luting-agents, radiopaque fillers play a significant role [10][11][12] . While the amine accelerator necessary for dual polymerization may also cause color change of the luting agent over time 13) , photo-polymerizing resin-based luting materials are preferred due to their color stability 14,15) .…”