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Microhardness evaluation of resin composites polymerized by three different light sources

Date

2007

Author

Hubbezoglu, Ihsan
Bolayir, Giray
Dogan, Orhan Murat
Dogan, Arife
Ozer, Ali
Bek, Buelent

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Abstract

This study examined the surface microhardness of four kinds of resin composites with different fillers and resin matrices. Ten specimens of 2 mm thickness and 4 mm diameter of each resin composite were polymerized using a halogen light, a blue light-emitted diode, and a plasma are unit. Microhardness evaluation was performed at top and bottom surfaces for each specimen using a Vickers microhardness tester. Furthermore, morphologies of the polished top surfaces of composites cured with blue ligbt-emitted diode were observed using scanning electron microscopy. Results indicated that composites cured with halogen or blue light-emitted diode light yielded higher microhardness values, although it also appeared to depend on the type of composite cured. Plasma arc curing according to manufacturer's instructions yielded the lowest microhardness values for all the materials. Among the materials tested, the nanofilled resin composite displayed the highest microhardness values for each curing regime.

Source

DENTAL MATERIALS JOURNAL

Volume

26

Issue

6

URI

https://dx.doi.org/10.4012/dmj.26.845
https://hdl.handle.net/20.500.12418/10506

Collections

  • Makale Koleksiyonu [5200]
  • Makale Koleksiyonu [5745]
  • Öksüz Yayınlar Koleksiyonu - WoS [6162]



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