The Effect of Gastric Acid on the Surface Properties of Different Universal Composites: A SEM Study

Table 1

Material used in the study.

Product	Type	Shade	Filler content-filler; (wt%/vol%)	Filler particle size	Manufacturer	Batch no.
Omnichroma	Nanofill resin composite	—	Supra-nanospherical fillers (260 nm spherical SiO2-ZrO2), UDMA, and TEGDMA (79 wt%/68 vol%)	2.6 μm	Tokuyama, Tokyo, Japan	010E70
Charisma Diamond One	Nanohybrid resin composite	—	Advanced TCD (tricyclodecane); Matrix, BPA-free, and BrF2 (82 wt%/65 vol%)	5 μm-20 μm	Heraeus Kulzer GmbH, Hanau, Hesse, Germany	K010021
Vittra Unique	Nanohybrid resin composite	—	UDMA, TEGDMA, photoinitiator composition (APS), Zr, Si, and BPA-free (72–82 wt%/52–60 vol%)	0.2 μm	FGM, Joinville, Brazil	21020
Neo Spectra	Nanohybrid resin composite	A2	Methacrilate-modified polysiloxane barium glass, and ytterbium fluoride (79%/61%)	3 μm-7 μm	Dentsply, North Carolina, USA	2103000019
A’CHORD	Nanohybrid/nanoceramic resin composite	A2	CERASMART, Bis-MEPP, UDMA, glass filler, and fumed silica (82 wt%/65vol %)	3 μm	GC, Luzern, Switzerland	2010071
Nova Compo C	Nanohybrid/nanoceramic resin composite	A2	Barium glasses, ytterbium and prepolymer, and TEGDMA (78 wt%/nondeclared)	4 μm	Imicryl, Konya, Turkey	21E795

Abbreviations: Bis-MEPP: bisphenol A ethoxylate dimethacrylate; BPA: Bisphenol A; TEGDMA: triethylene glycol dimethacrylate; UDMA: diurethane dimethacrylate.