Bonding Performance for Repairs Using Bulk Fill and Conventional Methacrylate Composites

Table 1

Composition of materials used in the study.

Material	Composition
FTK-filtek Z250 (3M ESPE)	Inorganic filler: zirconia and silica, (60% volume) with particle sizes ranging from 0,01 to 3,5 μm
Shade-A2
Batch: 1824200198	Contains bis-GMA, UDMA, and bis-EMA
OBF-Filtek one (3M ESPE)	Inorganic filler: combination of nonagglomerated/nonaggregated 20 nm silica particles, 4 to 11 nm nonagglomerated/nonaggregated zirconia particles, zirconia/silica nanoagglomerates and particles of particulate ytterbium trifluoride agglomerates of 100 nm, inorganic content of 58.5% (volume)
Shade-A2
Batch: N980337	Contains AFM, AUDMA, UDMA, and DDDMA
Scothbond universal (3M ESPE)	Phosphate monomer (MDP), dimethacrylate resins, filler, HEMA, vitrebond^TM copolymer, alcohol, water, initiators, silane
Batch: 1816000558
Phosphoric acid 35%,	Phosphoric acid 35%, thickener, dye and deionized water
Ultraetch (ultradent)
Batch: BFCCG

Bis-GMA: bisphenol-A glycidyl methacrylate; UDMA: dimethacrylate urethane; bis-EMA: bisphenol hydroxyethyl methacrylate; AFM: additional fragmentation monomer, AUDMA: aromatic dimethacrylate urethane; DDDMA: 1,12 dodecanediol dimethacrylate; HEMA: 2-hydroxyethyl methacrylate.