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[Color stability of light curing composites].

J Setz1, W Lin, H Pfeifer

  • 1Abtlg. für Zahnarztl. Prothetik II, Universität Tubingen.

Deutsche Zahnarztliche Zeitschrift
|October 1, 1990
PubMed
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This study evaluated the color stability of light-cured composites after aging. While high filler content composites performed best, the amount of inorganic filler did not strongly correlate with color stability after experimental aging.

Area of Science:

  • Dental Materials Science
  • Polymer Chemistry

Background:

  • Color stability is crucial for aesthetic dental restorations.
  • Light-cured composites are widely used, but their color can change over time.
  • Understanding factors influencing composite color stability is essential for clinical success.

Purpose of the Study:

  • To assess the color stability of various light-cured composite materials after experimental aging.
  • To investigate the relationship between inorganic filler content and color change in composites.

Main Methods:

  • Tested eight commercial and two experimental light-cured composite resins.
  • Subjected materials to experimental aging protocols.
  • Measured color differences using computer-controlled spectrophotometry (CIELAB L*A*B* coordinates).

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Main Results:

  • Composites with higher inorganic filler content generally exhibited better color stability.
  • The composite with the lowest inorganic filler content showed the most significant discoloration.
  • No strong direct correlation was found between inorganic filler amount and color stability post-aging.

Conclusions:

  • Inorganic filler content is a factor, but not the sole determinant, of light-cured composite color stability.
  • Further research is needed to fully elucidate the complex relationship between composite composition and color longevity.