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Influence of curing light type and staining medium on the discoloring stability of dental restorative composite

  • Jamaluddin Syed
  • , Ayman Al. Dharrab
  • , Muhammad S. Zafa
  • , Erum Khand
  • , Raffaella Aversa
  • , Relly Victoria V. Petrescu
  • , Antonio Apicella
  • , Florian Ion T. Petrescu
  • Faculty of Dentistry, King Abdulaziz University
  • Taibah University
  • Bhitai Dental and Medical College
  • University of Campania Luigi Vanvitelli
  • University Politehnica of Bucharest

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Discoloration kinetics of 4 commercial nano-filled resin composites polymerized with LED and QTH source types in 4 different staining media held at 37°C are investigated. Quartz Tungsten Halogen (QTH) and Light Emitting Diode (LED) were used. Dental composites color change was monitored with a digital spectrophotometer at one, two and four weeks for quantitative comparison. The kinetics and intensities of the color change in accelerated aging tests in staining media were monitored and discussed. Discoloring followed diffusive driven kinetics. The four composites polymerized with QTH light showed higher differences in color change intensities compared to LED cured ones. All the QTH cured samples have shown significant higher variations of color changes intensities compared to LED samples (p<0.05). LED cured composite showed comparatively more stable initial shade persistence than QTH cured ones, which may be explained in terms of higher level of polymerization and surface hardness reached by the LED light cure resinous composite matrix.

Original languageEnglish
Pages (from-to)42-50
Number of pages9
JournalAmerican Journal of Biochemistry and Biotechnology
Volume13
Issue number1
DOIs
StatePublished - 2017
Externally publishedYes

Keywords

  • Bioactive scaffolds
  • Biochemistry
  • Bioengineering
  • Biomaterials
  • Biotechnology

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