Surface microhardness of a resin composite exposed to a "first-generation" LED curing lamp, in vitro.

Pauraic Keogh; Noel J. Ray; Christopher D. Lynch; Francis M. Burke; Ailish Hannigan

Surface microhardness of a resin composite exposed to a "first-generation" LED curing lamp, in vitro.

Pauraic Keogh, Noel J. Ray, Christopher D. Lynch, Francis M. Burke, Ailish Hannigan

School of Medicine

Research output: Contribution to journal › Article › peer-review

Abstract

This investigation determined the minimum exposure times consistent with optimised surface microhardness parameters for a commercial resin composite cured using a "first-generation" light-emitting diode activation lamp. Disk specimens were exposed and surface microhardness numbers measured at the top and bottom surfaces for elapsed times of 1 hour and 24 hours. Bottom/top microhardness number ratios were also calculated. Most microhardness data increased significantly over the elapsed time interval but microhardness ratios (bottom/top) were dependent on exposure time only. A minimum exposure of 40 secs is appropriate to optimise microhardness parameters for the combination of resin composite and lamp investigated.

Original language	English
Pages (from-to)	177-180
Number of pages	4
Journal	The European journal of prosthodontics and restorative dentistry
Volume	12
Issue number	4
Publication status	Published - Dec 2004

Cite this

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AU - Burke, Francis M.

AU - Hannigan, Ailish

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AB - This investigation determined the minimum exposure times consistent with optimised surface microhardness parameters for a commercial resin composite cured using a "first-generation" light-emitting diode activation lamp. Disk specimens were exposed and surface microhardness numbers measured at the top and bottom surfaces for elapsed times of 1 hour and 24 hours. Bottom/top microhardness number ratios were also calculated. Most microhardness data increased significantly over the elapsed time interval but microhardness ratios (bottom/top) were dependent on exposure time only. A minimum exposure of 40 secs is appropriate to optimise microhardness parameters for the combination of resin composite and lamp investigated.

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JO - The European journal of prosthodontics and restorative dentistry

JF - The European journal of prosthodontics and restorative dentistry

IS - 4

ER -

Surface microhardness of a resin composite exposed to a "first-generation" LED curing lamp, in vitro.

Abstract

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