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Effect of the difference in spectral outputs of the single and dual-peak LEDs on the microhardness and the color stability of resin composites / 대한치과보존학회지
Journal of Korean Academy of Conservative Dentistry ; : 108-113, 2011.
Artigo em Inglês | WPRIM | ID: wpr-178062
ABSTRACT

OBJECTIVES:

To determine the effect of the spectral output of single and dual-peak light emitting diode (LED) curing lights on the microhardness and color stability of commercial resin composites formulated with camphorquinone and alternative photoinitiators in combination. MATERIALS AND

METHODS:

Three light-polymerized resin composites (Z100 (3M ESPE), Tetric Ceram (Ivoclar Vivadent) and Aelite LS Posterior (Bisco)) with different photoinitiator systems were used. The resin composites were packed into a Teflon mold (8 mm diameter and 2 mm thickness) on a cover glass. After packing the composites, they were light cured with single-peak and dual-peak LEDs. The Knoop microhardness (KHN) and color difference (DeltaE) for 30 days were measured. The data was analyzed statistically using a student's t-test (p < 0.05).

RESULTS:

All resin composites showed improved microhardness when a third-generation dual-peak LED light was used. The color stability was also higher for all resin composites with dual-peak LEDs. However, there was a significant difference only for Aelite LS Posterior.

CONCLUSIONS:

The dual-peak LEDs have a beneficial effect on the microhardness and color stability of resin composites formulated with a combination of camphorquinone and alternative photoinitiators.
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Politetrafluoretileno / Cânfora / Técnica de Imunoensaio Enzimático de Multiplicação / Resinas Compostas / Fungos / Vidro / Luz Idioma: Inglês Revista: Journal of Korean Academy of Conservative Dentistry Ano de publicação: 2011 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Politetrafluoretileno / Cânfora / Técnica de Imunoensaio Enzimático de Multiplicação / Resinas Compostas / Fungos / Vidro / Luz Idioma: Inglês Revista: Journal of Korean Academy of Conservative Dentistry Ano de publicação: 2011 Tipo de documento: Artigo