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The Effect Of Different Fiber Concentrations On The Surface Roughness Of Provisional Crown And Fixed Partial Denture Resin

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Date
2008
Author
Zortuk, Mustafa
Kılıc, Kerem
Uzun, Gulay
Ozturk, Ahmet
Kesim, Bulent
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Abstract
Objectives The aim of this study was to investigate surface roughness in provisional crown acrylics, after polishing, reinforced with different concentrations of glass fibers. Methods A total of 48 disk-shaped specimens were prepared using autopolymerizing acrylic resin. These specimens were divided into four groups according to the level of glass fiber added: Group A (no fiber), Group B (0.5%), Group C (1%) and Group D (2%). After polishing the specimens, an average surface roughness (Ra) value was calculated using a profilometer from four randomly selected points on the surface. Results A significant difference was determined among the surface roughness values of provisional crown resins to which different concentrations of fiber had been added (P<.001). Tukey’s test was then used to perform paired comparisons of the data between the different groups, and a significant difference was found between Group A (no fiber) and the other groups, between Group B (0.5%) and Group D (2%) and between Group C (1%) and Group D. On the other hand, there was no significant difference between Group B and Group C. Conclusions The reinforcement of provisional crown and fixed partial denture resin with glass fibers increases surface roughness.
URI
https://doi.org/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2635901/
http://hdl.handle.net/11655/19177
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