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Changes in color and translucency of porcelain-repairing resin composites after thermocycling

Cited 9 time in Web of Science Cited 8 time in Scopus
Issue Date
2006
Publisher
Wiley-Blackwell
Citation
J Biomed Mater Res Part B: Appl Biomater 2006;78B:1–6
Keywords
color changetranslucency changedental porcelainporcelain-repairing resin composite
Abstract
The objective of this study was to determine the changes in color and translucency
of dental porcelain-repairing resin composites compared to dental porcelain after thermocycling.
Color and spectral reflectance of three shades (A2, A3, and A3.5) of one brand of dental
porcelain and three basic shades (A2, A3, and A3.5) and three combinations (A2/A3, A3/3.5,
and A2/A3.5) of three brands of porcelain-repairing resin composites (ABT, FSP, and TCR)
were measured, before and after thermocycling for 3000 cycles, relative to the illuminant D65.
The specimen was 2 mm in thickness, and 1 mm of each shade was layered to make combined
shades. Changes in color ( E*ab) and translucency parameter ( TP) were calculated. A
general linear model by the material (porcelain or resin composite) and shade was used to
compare differences ( 0.05). The range of color changes was 0.68 –1.67 in porcelain,
0.56 –1.30 in ABT, 2.28 –3.10 in FSP, and 0.36 –1.15 in TCR. The range of TP was 0.45– 0.96
in porcelain, 0.48 to 0.94 in ABT, 1.31 to 0.82 in FSP, and 0.51 to 1.91 in TCR. After
thermocycling, changes in color and TP were correlated with the shade of the material, but not
with the material. The discrepancy in the changes of color and translucency after thermocycling
between porcelain and porcelain-repairing resin composites should be considered when
selecting repairing materials.
ISSN
1552-4973
Language
English
URI
https://hdl.handle.net/10371/68580
DOI
https://doi.org/10.1002/jbm.b.30437
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Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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