A laboratory investigation of colour changes in two contemporary resin composites on exposure to spices

Hsu Zenn Yew, T. L. Berekally, L. C. Richards

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Background The aim of this study was to evaluate colour stability upon exposure to spices of a nano-filled and a micro-hybrid resin composite finished either with Sof-Lex™ discs (SLD) or against plastic strips (PS). Methods Forty cylindrical specimens of 3 mm thickness were fabricated from Filtek Supreme XT ™ (FS) and Gradia Direct X™ (GD). The top surface of each specimen was polished with SLD while the bottom surface was finished against PS. All samples were immersed in staining solutions (0.1% weight turmeric, paprika and tamarind) and distilled water at 37 °C. Colour after 0, 24, 72 and 168 hours of immersion was recorded with a reflection spectrophotometer using CIE L*a*b* parameters and the results were statistically analysed with repeated measures of ANOVA and Bonferroni post hoc tests. Results Among all the staining solutions tested, the highest colour deviation was obtained in the turmeric group. FS finished against PS showed significantly more colour changes compared to specimens polished with SLD, while GD finished against PS were found to be more resistant to colour changes. Conclusions Within the limitations of this study all the spices tested have the potential to stain resin composites with turmeric causing the most significant discolouration. Micro-hybrid and nano-filled resin composites appeared to respond differently to staining by spices when either finished with PS or polished with SLD.

Original languageEnglish
Pages (from-to)468-477
Number of pages10
JournalAustralian Dental Journal
Volume58
Issue number4
DOIs
Publication statusPublished - Dec 2013

Fingerprint

Spices
Composite Resins
Plastics
Curcuma
Color
Staining and Labeling
Tamarindus
Capsicum
Immersion
Analysis of Variance
Coloring Agents
Weights and Measures
Water

Keywords

  • Colour stability
  • micro-hybrid
  • nano-filled
  • resin composite
  • spices

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

A laboratory investigation of colour changes in two contemporary resin composites on exposure to spices. / Yew, Hsu Zenn; Berekally, T. L.; Richards, L. C.

In: Australian Dental Journal, Vol. 58, No. 4, 12.2013, p. 468-477.

Research output: Contribution to journalArticle

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