Is Deterioration of Surface Properties of Resin Composites Affected by Filler Size?

Table 1

Composition of materials used in the study.

Resin composite	Filler particles (ground glass (Ba-Al-B-silicate glass))				Matrix
	Shape	Size (nm)	Wt (%)	Vol (%)
I1	Irregular	450	76.4	56.7	Bis-GMA, UDMA, and TEGDMA
I2	Irregular	700	76.4	56.7
I3	Irregular	1000	76.4	56.7
I4	Irregular	1500	76.4	56.7
I5	Irregular	450, 1000 (1 : 3)	76.4	56.7
I6	Irregular	450, 700, and 1500 (1 : 1:3)	76.4	56.7
SP	Spherical	100	72.4	56.7
Tetric ceram (TC)
Lot: C49490	Irregular & spherical	40, 200, and 1000	79	60