Alteration of blue pigment in artificial iris in ocular prosthesis: Effect of paint, drying method and artificial aging
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Data
2011-02-01
Autores
Goiato, Marcelo Coelho [UNESP]
Rocha Fernandes, Aline Ursula
Santos, Daniela Micheline dos [UNESP]
Hadadd, Marcela Filie
Moreno, Amalia
Pesqueira, Aldieris Alves [UNESP]
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Editor
Elsevier B.V.
Resumo
The artificial iris is the structure responsible for the dissimulation and aesthetics of ocular prosthesis. The objective of the present study was to evaluate the color stability of artificial iris of microwaveable polymerized ocular prosthesis, as a function of paint type, drying method and accelerated aging. A total of 40 discs of microwaveable polymerized acrylic resin were fabricated, and divided according to the blue paint type ( n = 5): hydrosoluble acrylic, nitrocellulose automotive, hydrosoluble gouache and oil paints. Paints where dried either at natural or at infrared light bulb method. Each specimen was constituted of one disc in colorless acrylic resin and another colored with a basic sclera pigment. Painting was performed in one surface of one of the discs. The specimens were submitted to an artificial aging chamber under ultraviolet light, during 1008 h. A reflective spectrophotometer was used to evaluate color changes. Data were evaluated by 3-way repeated-measures ANOVA and the Tukey HSD test (alpha = 0.05). All paints suffered color alteration. The oil paint presented the highest color resistance to artificial aging regardless of drying method. (C) 2010 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.
Descrição
Palavras-chave
Artificial eye, Color stability, Ultraviolet rays, Artificial aging
Como citar
Contact Lens & Anterior Eye. Amsterdam: Elsevier B.V., v. 34, n. 1, p. 22-25, 2011.