Influence of Different Pigmentations and Accelerated Aging on the Hardness and Tear Strength of the A-2186 and MDX4-4210 Silicones
Table 1
Mean (Shore A units) ± standard deviation for the hardness test of the A-2186 and MDX4-4210 silicones, according to the period and pigmentation (or no pigmentation).
Silicone
Pigmentation
Period
Initial
252 hours
504 hours
1008 hours
A-2186
Without pigmentation
29.64 ± 1.56 Aa
31.46 ± 1.56 ABb
31.46 ± 0.78 Ab
30.16 ± 2.60 Ca
Bronze
29.64 ± 2.34 Aa
30.94 ± 1.56 Bb
31.72 ± 1.04 Ab
30.94 ± 0.26 Cb
Black
30.94 ± 1.04 Aa
32.76 ± 1.04 Abc
31.98 ± 1.30 Ab
33.54 ± 1.30 Ac
Pink
28.08 ± 2.08 Ba
31.20 ± 1.30 Bb
31.98 ± 1.04 Ab
32.24 ± 0.78 Bb
MDX4-4210
Without pigmentation
27.30 ± 1.82 Aa
28.34 ± 2.08 ABa
29.64 ± 1.30 Ab
30.16 ± 1.04 Ab
Bronze
25.48 ± 1.04 Ba
26.52 ± 1.04 Cb
27.30 ± 1.04 Cbc
27.82 ± 1.04 Bc
Black
27.57 ± 1.82 Aa
29.64 ± 1.30 Ab
29.12 ± 1.56 ABb
29.12 ± 1.56 Ab
Pink
26.26 ± 0.78 ABa
27.82 ± 1.30 BCb
28.08 ± 1.56 BCb
27.82 ± 1.04 Bb
Different lowercase letters in row show a statistical difference (, Tukey). Different uppercase letters in column show a statistical difference (for each silicone individually) (, Tukey).
