Chromatic stability of acrylic resins of artificial eyes submitted to accelerated aging and polishing
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
---|---|
Data(s) |
30/09/2013
20/05/2014
30/09/2013
20/05/2014
01/11/2010
|
Resumo |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Esthetics and durability of materials used to fabricate artificial eyes has been an important issue since artificial eyes are essential to restore esthetics and function, protect the remaining tissues and help with patients' psychological therapy. However, these materials are submitted to degrading effects of environmental agents on the physical properties of the acrylic resin. Objective: This study assessed the color stability of acrylic resins used to fabricate sclera in three basic shades (N1, N2 and N3) when subjected to accelerated aging, mechanical and chemical polishing. Material and Methods: Specimens of each resin were fabricated and submitted to mechanical and chemical polishing. Chromatic analysis was performed before and after accelerated aging through ultraviolet reflection spectrophotometry. Results: All specimens revealed color alteration following polishing and accelerated aging. The resins presented statistically significant chromatic alteration (p<0.01) between the periods of 252 and 1008 h. Conclusions: Both polishing methods presented no significant difference between the values of color derivatives of resins. |
Formato |
641-645 |
Identificador |
http://dx.doi.org/10.1590/S1678-77572010000600018 Journal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 18, n. 6, p. 641-645, 2010. 1678-7757 http://hdl.handle.net/11449/15318 S1678-77572010000600018 WOS:000287143800017 S1678-77572010000600018-en.pdf |
Idioma(s) |
eng |
Publicador |
Universidade de São Paulo (USP), Faculdade de Odontologia de Bauru |
Relação |
Journal of Applied Oral Science |
Direitos |
openAccess |
Palavras-Chave | #Color #Resins #Dental polishing #Ocular prosthesis |
Tipo |
info:eu-repo/semantics/article |