International Journal of Dentistry / 2020 / Article / Tab 3

Research Article

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

Table 3

Mean (SD) of 2D roughness parameters.

GroupTooth-brushing abrasion
At start (0 cycle)After 2 years brushing (after 10,000 cycles)After 4 years brushing (after 20,000 cycles)
RaRtRaRtRaRt

Sp0.02 (0.01)a0.30 (0.04)a0.10 (0.01)a,b1.30 (0.02)a0.90 (0.05)a1.90 (0.05)a
I10.03 (0.01)a0.31 (0.02)a0.30 (0.06)a2.27 (0.24)b1.30 (0.07)b2.94 (0.06)b
I20.03 (0.09)a0.35 (0.05)a0.70 (0.03)c2.28 (0.12)b,c1.64 (0.05)c,f3.02 (0.14)b
I30.03 (0.01)a0.33 (0.02)a1.10 (0.08)d2.59 (0.07)c2.01 (0.07)d3.06 (0.06)b
I40.03 (0.01)a0.31 (0.04)a2.04 (0.15)e2.60 (0.21)c3.35 (0.31)e3.10 (0.12)b
I50.03 (0.01)a0.32 (0.03)a0.48 (0.12)a,b,c2.03 (0.04)b1.38 (0.11)b,c2.69 (0.06)c
I60.03 (0.01)a0.32 (0.03)a0.64 (0.04)c2.09 (0.02)b1.74 (0.08)f3.11 (0.06)b
TC0.01 (0.01)a0.27 (0.02)a0.08 (0.02)a1.14 (0.04)a0.71 (0.04)g2.07 (0.08)a

Within each column, similar superscripts indicate no significant difference (). Within each group, represent significant differences in Ra and Rt among tooth-brushing abrasion cycles.

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