Effect of weathering and thickness on roughness of acrylic resin and ocular button☆
published online 14 January 2010.
Abstract
Purpose
The aim of this study was to evaluate the roughness of colorless ocular button and four brands of colorless acrylic resins designed to fabricate ocular prosthesis as a function of weathering (1008h) and different thickness (1 and 3.5mm).
Materials and methods
One-hundred-and-twenty specimens were fabricated and distributed in 12 groups. The analysis was carried out by means of digital roughness meter.
Results
Data were analyzed statistically by ANOVA and Tukey test at 1% significance. The results showed that there was no statistically significant difference after the weathering period. Both the Vipi Cril acrylic resin with 3.5mm in thickness and ocular button with 1mm in thickness presented the lowest roughness values (0.12Ra).
Conclusion
The roughness of the acrylic resins and the ocular button was not affect by the weathering of 1008h. However, the thickness of the specimens proved to have a major influence on roughness property.
aUniversity of Brasília (UnB), Barsília/DF, Brazil
bDepartment of Dentistry Materials and Prosthesis, Faculty of Dentistry of Araçatuba, University of the State of São Paulo, Brazil
Corresponding author at: R- José Bonifácio 1193 - Vila Mendonça, Code: 16015-050, Araçatuba/São Paulo, Brazil. Tel.: +55 18 3636 3287.
☆ Source of public financial support: This investigation was supported by the Foundation for Support to Research of the State of Sao Paulo (FAPESP) – Brazil – Proc. 08/54932.
ABSTRACT