Effect of Intrinsic Pigmentation on the Tear Stren

Authors: Sajni Y Rai Satyabodh S Guttal

Publish Date: 2012/09/28

Volume: 13, Issue: 1, Pages: 30-35

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Abstract

The purpose of this study was to evaluate the water sorption and tear strength of two commercially available silicone elastomers Silicone test specimens with the dimension of 150 mm × 150 mm × 3 mm were prepared for cosmesil M511 silicone Cosmedica Ltd Cardiff UK and biomed silicone MP Sai Enterprises Mumbai India Sixty test specimens were divided equally into two groups—I and II Group I and II were further subdivided into A B and C with 10 specimens each Subgroup A represented the control group without colorant test specimens in subgroup B incorporated with intrinsic pigments were evaluated for tear strength and subgroup C specimens incorporated with intrinsic pigments were evaluated for water sorption Students’s t test was performed Among the control group cosmesil M511 silicone showed more tear strength with the mean of 1142 ± 073 compared to biomed silicone which showed 664 ± 070 The tear strength values increased for both silicones after intrinsic pigmentation Cosmesil M511 silicone showed more water sorption compared to biomed silicone Medical grade cosmesil M511 silicone had better tear strength values compared to biomed silicone

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