Journal
EUROPEAN JOURNAL OF ORAL SCIENCES
Volume 108, Issue 4, Pages 341-345Publisher
MUNKSGAARD INT PUBL LTD
DOI: 10.1034/j.1600-0722.2000.108004341.x
Keywords
elution; leaching; light curing; resin composites; residual monomers
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Plasma are light units for curing resin composites have been introduced with the claim of relatively short curing times. The purpose of the present study was to measure and compare elution of monomers from an experimental BisGMA-TEGDMA resin and a commercial resin composite when cured with a halogen unit and when cured with a plasma are unit. Specimens of the materials were immersed in methanol, and the amounts of monomers released with time were analyzed by HPLC. By use of Fick's laws of diffusion, the amount of eluted monomers from the specimen at infinity was estimated. The elution from resin specimens and from resin composite specimens cured with the plasma are light unit was 7 and 4 times higher, respectively, compared to the elution from specimens cured with the halogen unit. It was concluded that the plasma are light curing unit did not provide optimal cure when used as recommended by the manufacturer.
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