Chromatic stability of acrylic resins of artificial eyes submitted to accelerated aging and polishing
J. appl. oral sci
;
18(6): 641-645, Nov.-Dec. 2010. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-573737
ABSTRACT
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 ANDMETHODS:
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.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Resinas Acrílicas
/
Pigmentação em Prótese
/
Olho Artificial
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2010
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
São Paulo State University/BR
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