Research Papers: Therapeutic

Chromatic changes to artificial irises produced using different techniques

[+] Author Affiliations
Lisiane Cristina Bannwart, Marcelo Coelho Goiato, Daniela Micheline dos Santos, Amália Moreno, Marcela Filié Haddad, Agda Marobo Andreotti, Rodrigo Antonio de Medeiros

São Paulo State University, UNESP, Araçatuba School of Dentistry, Department of Dental Materials and Prosthodontics, Araçatuba, São Paulo, Brazil

Aldiéris Alves Pesqueira

University Sagrado Coração (USC), Bauru, São Paulo, Brazil

J. Biomed. Opt. 18(5), 058002 (May 02, 2013). doi:10.1117/1.JBO.18.5.058002
History: Received January 9, 2013; Revised April 6, 2013; Accepted April 9, 2013
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Abstract.  Ocular prostheses are important determinants of their users’ aesthetic recovery and self-esteem. Because of use, ocular prostheses longevity is strongly affected by instability of the iris color due to polymerization. The goal of this study is to examine how the color of the artificial iris button is affected by different techniques of artificial wear and by the application of varnish following polymerization of the colorless acrylic resin that covers the colored paint. We produce 60 samples (n=10) according to the wear technique applied: conventional technique without varnish (PE); conventional technique with varnish (PEV); technique involving a prefabricated cap without varnish (CA); technique involving a prefabricated cap with varnish (CAV); technique involving inverted painting without varnish (PI); and technique involving inverted painting with varnish (PIV). Color readings using a spectrophotometer are taken before and after polymerization. We submitted the data obtained to analyses of variance and Tukey’s test (P<0.05). The color test shows significant changes after polymerization in all groups. The PE and PI techniques have clinically acceptable values of ΔE, independent of whether we apply varnish to protect the paint. The PI technique produces the least color change, whereas the PE and CA techniques significantly improve color stability.

Figures in this Article
© 2013 Society of Photo-Optical Instrumentation Engineers

Topics

Iris ; Polymerization

Citation

Lisiane Cristina Bannwart ; Marcelo Coelho Goiato ; Daniela Micheline dos Santos ; Amália Moreno ; Aldiéris Alves Pesqueira, et al.
"Chromatic changes to artificial irises produced using different techniques", J. Biomed. Opt. 18(5), 058002 (May 02, 2013). ; http://dx.doi.org/10.1117/1.JBO.18.5.058002


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