Table 1: Materials and characteristics.

GroupComposite resinCommercial brandCompositionLot

G1Filtek P903M/ESPE, St. Paul, MN, USAMicrohybrid
Quartz and radiopaque yttrium fluoride
(Silorane)
N322267

G2Filtek Z3503M/ESPE, St. Paul, MN, USANanoparticles and nanoclusters
Silica/zirconia
(Bis-GMA/TEGDMA)
N355898

G3Filtek Z350 XT flow3M/ESPE, St. Paul, MN, USANanoparticles and nanoclusters
Silica/zirconia
(Bis-GMA/TEGDMA)
N399586

G4Tetric CeramIvoclar-Vivadent, Schaan, LiechtensteinMicrohybrid
Barium glass, barium fluorosilicate-aluminum glass, ytterbium trifluoride, silicon dioxide, and oxides
(Bis-GMA/TEGDMA)
P87674

G5TPH SpectrumDentsply Caulk, Milford, DE, USA Microhybrid
Silanized aluminum boron silicate, barium, and pyrolytic silica
(Bis-GMA/TEGDMA)
720359E

G6SureFil SDR flowDentsply Caulk, Milford, DE, USA(Bis-GMA/TEGDMA)
Size not informed by manufacturer
Aluminum silicate barium fluoride glass, and strontium aluminum silicate fluoride glass
671513E