Effect of Chemical Challenges on the Properties of Composite Resins

Table 3

Delta values of roughness surface (Δ_R = initial_R − final_R) after 180 days of degradation in different solutions.

Composite resin	Solutions treatments
	Water	Alcohol	Citric acid	Phosphoric acid
Z350	0.013(0.008)^Aa	−0.047(0.007)^ABb	−0.044(0.011)^Ab	−0,026(0.006)^Ab
HRI	0.013(0.010)^Aa	−0.067(0.031)^Bbc	−0.090(0.025)^Bc	−0,045(0.011)^Ab
BIO	−0,012(0.007)^Aa	−0.055(0.014)^Bb	−0.046(0.040)^Ab	−0,035(0.015)^Aab
VITTRA	0.015(0.011)^Aa	−0.022(0.009)^Ab	−0.016(0.011)^Aab	−0,016(0.007)^Aab
BULK	0.006(0.001)^Aa	−0.048(0.032)^Bb	−0.045(0.041)Ab	−0,047(0.016)^Ab

Different capital letters (in column) and small letters (in line) are statistically different from each other for Tukey’s test .