Effects of pigment, disinfection, and accelerated aging on the hardness and deterioration of a facial silicone elastomer

The failure of facial prostheses is caused by limitations in their flexibility and durability. Therefore, we evaluated the effects of disinfection and aging on Shore A hardness and deterioration of a facial silicone with different pigmentations. Twenty samples with addition of each pigment (ceramic...

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Bibliographic Details
Published in:Polymer degradation and stability 2012-09, Vol.97 (9), p.1577-1580
Main Authors: Goiato, Marcelo Coelho, Pesqueira, Aldiéris Alves, Moreno, Amália, dos Santos, Daniela Micheline, Haddad, Marcela Filié, Bannwart, Lisiane Cristina
Format: Article
Language:English
Subjects:
Accelerated aging
analysis of variance
Applied sciences
ceramics
Deterioration
disinfectants
Disinfection
durability
Exact sciences and technology
Facial
Hardness
Physicochemistry of polymers
Pigments
Polymer
Polymer industry, paints, wood
prostheses
Samples
silicone
Silicones
Statistical analysis
Statistical methods
Technology of polymers
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Summary:The failure of facial prostheses is caused by limitations in their flexibility and durability. Therefore, we evaluated the effects of disinfection and aging on Shore A hardness and deterioration of a facial silicone with different pigmentations. Twenty samples with addition of each pigment (ceramic (C), make-up (M)) and without pigment (L) were made. For each pigment type and no pigment, 10 samples were subjected to two types of disinfectant solution (soap (S) and Efferdent (E)), totaling sixty samples. The specimens were disinfected three times per week for 60 days, and subjected to accelerated aging for 1008 h. The hardness of the facial silicone was measured with a durometer, and its deterioration was evaluated by obtaining the weight difference over time. Both the hardness and weight of the samples were measured at baseline, after chemical disinfection, and periodically during accelerated aging (252, 504, and 1008 h). Deterioration was calculated during the periods between baseline and chemical disinfection, and between baseline and each aging period. The results were analyzed using three-way repeated measures ANOVA and the Tukey's HSD Post-hoc test (α = 0.05). Specifically, samples containing pigment exhibited significantly higher hardness and deterioration values than those lacking pigment (P 
ISSN:0141-3910
1873-2321
DOI:10.1016/j.polymdegradstab.2012.06.033