Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison
Table 3
Mean values (and standard deviations, SD) recorded for tensile strength at break (TSb), yield strength (YS), ultimate strain at break (USb), and strain at yield point (Sy) in the different experimental groups.
TSb (SD) (MPa)
YS (SD) (MPa)
Acqu-HB
5.10 (0.40)
Affi-HB
2.85 (1.26)
Acqu-LB
4.98 (0.39)
Acqu-MB
2.70 (1.28)
Flexi-HB
4.90 (0.99)
Exa-LB
2.70 (0.91)
Affi-HB
4.88 (0.52)
Acqu-HB
2.36 (0.97)
Acqu-MB
4.18 (0.59)
Flexi-HB
2.12 (0.99)
Exa-LB
4.03 (0.56)
Acqu-LB
1.97 (0.81)
Hydro-HB
3.19 (1.02)
Flexi-LB
1.78 (1.01)
Exa-MB
3.16 (0.52)
Affi-MB
1.77 (0.64)
Flexi-LB
2.93 (0.54)
Hydro-HB
1.60 (0.98)
Affi-MB
2.60 (0.37)
Flexi-MB
1.47 (0.56)
Hydro-LB
2.30 (0.31)
Hydro-MB
1.38 (0.46)
Flexi-MB
2.10 (0.34)
Hydro-LB
1.35 (0.47)
Affi-LB
2.03 (0.55)
Exa-MB
1.35 (0.69)
Hydro-MB
1.77 (0.31)
Affi-LB
1.12 (0.51)
Impr-LB
1.46 (0.19)
Impr-HB
1.11 (0.46)
Impr-HB
1.44 (0.42)
Exa-HB
0.96 (0.32)
Exa-HB
1.42 (0.29)
Impr-LB
0.94 (0.26)
USb (SD) (mm)
Sy (SD) (mm)
Hydro-LB
101.26 (13.86)
Flexi-LB
56.57 (27.60)
Flexi-LB
90.39 (15.72)
Hydro-LB
51.43 (19.46)
Hydro-MB
81.59 (21.25)
Flexi-MB
51.01 (17.23)
Flexi-MB
77.61 (9.71)
Impr-HB
48.23 (22.42)
Impr-HB
77.17 (21.11)
Exa-LB
45.74 (15.06)
Exa-LB
71.69 (12.95)
Hydro-MB
35.61 (29.68)
Exa-MB
56.56 (11.17)
Affi-MB
35.09 (13.29)
Affi-MB
56.43 (12.52)
Aqua-MB
28.32 (12.86)
Exa-HB
54.21 (17.76)
Affi-LB
27.23 (15.44)
Affi-LB
47.55 (10.21)
Affi-HB
26.24(12.18)
Affi-HB
47.19 (6.01)
Aqua-LB
18.74 (5.67)
Aqua-MB
46.09 (8.08)
Impr-LB
18.56 (6.07)
Aqua-LB
45.88 (5.07)
Exa-MB
16.92 (13.27)
Impr-LB
45.68 (10.81)
Aqua-HB
15.64 (6.29)
Hydro-HB
41.77 (14.53)
Exa-HB
14.01 (10.37)
Aqua-HB
34.53 (3.65)
Hydro-HB
12.09 (8.42)
Flexi-HB
26.23 (2.80)
Flexi-HB
9.43 (4.29)
The same superscript letters indicate no statistically significant differences (). Heavy body. Medium body. Light body.
