PMID: 18203490Jan 22, 2008Paper

Microhardness evaluation of resin composites polymerized by three different light sources

Dental Materials Journal
Ihsan HubbezoğluBülent Bek

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 arc 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 light-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.

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Citations

Jul 25, 2009·Lasers in Medical Science·Alessandra CassoniJosé Augusto Rodrigues
Mar 4, 2008·Dental Materials Journal·Ihsan HubbezogluOrhan Murat Dogan
Aug 5, 2011·Journal of Conservative Dentistry : JCD·Batu Can YamanSami Büyükgökçesu
Apr 9, 2014·Photomedicine and Laser Surgery·Josiane Marques de Sena PopoffAlessandra Cassoni
Dec 17, 2014·European Journal of Dentistry·Thyagaseely Sheela PremarajHidehiko Watanabe
Oct 15, 2014·Acta Odontologica Scandinavica·Maria Cecília Caldas GiorgiFlávio Henrique Baggio Aguiar
Jul 10, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Felipe Weidenbach DegraziaSalvatore Sauro
Sep 10, 2010·Journal of the Mechanical Behavior of Biomedical Materials·Adem KuşgözOnur Saray

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