Accelerated Aging Effects on Color Change, Translucency Parameter, and Surface Hardness of Resin Composites

Table 4

Means and standard deviations for TP and ΔTP (baseline minus after accelerated aging) of the tested materials.

Resin composites	Before AAA	After AAA	Total (composite)	ΔTP
Filtek Z250	7.70 (0.70)	7.03 (0.95)	7.37 (0.89)^a	-1.18 (0.66)^a
Tetric N-Ceram	8.24 (0.73)	6.77 (0.82)	7.51 (1.07)^a	-1.46 (0.99)^a
Charisma Smart	6.86 (0.90)	5.59 (0.75)	6.23 (1.04)^b	-1.46 (0.95)^a
Herculite Classic	8.74 (0.80)	7.47 (1.03)	8.11 (1.08)^c	-1.26 (0.96)^a
Escom100	8.94 (0.43)	7.79 (0.82)	8.37 (0.87)^c	-1.15 (0.76)^a
Total (AAA)	8.09 (1.03)^A	6.93 (1.15)^B	7.52 (1.24)

Different capital letters represent statistically significant differences in each row () (main effect; AAA). Different lower letters represent statistically significant differences in each column () (main effect; composite). There is no difference between the interaction factors () (AAAcomposite). ΔTP: there is no difference between the composites.