Release of monomers from four different composite materials after halogen and LED curing
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In: American Journal of Dentistry, Vol. 24, No. 5, 01.10.2011, p. 315-321.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Release of monomers from four different composite materials after halogen and LED curing
AU - Polydorou, Olga
AU - König, Armin
AU - Altenburger, Markus Jörg
AU - Wolkewitz, Martin
AU - Hellwig, Elmar
AU - Kümmerer, Klaus
PY - 2011/10/1
Y1 - 2011/10/1
N2 - Purpose: To evaluate the release of monomers from four different composite materials (Ceram X, Filtek Supreme XT, Tetric Flow, Tetric EvoCeram), polymerized using either halogen or LED unit. Methods: Ten specimens were made for each material/unit combination. Each specimen was stored in 1 ml 75% ethanol. The storage medium was renewed after 1, 7 and 28 days. Aliquots of this medium were analyzed by LC-MS/MS. Results: The effect of the curing unit on monomers' release differed significantly among the materials (P< 0.0001). The amount of BisGMA and TEGDMA released from Ceram X was not influenced by the unit used (P> 0.05). Curing with LED reduced the amount of Bisphenol A released from Ceram X compared to halogen. For Filtek Supreme XT, the type of unit exerted a significant effect on the elution of BisGMA (P< 0.05). LED curing resulted in a higher release of TEGDMA and UDMA compared to halogen (P< 0.05). For Tetric Flow, LED curing resulted in lower monomer release (P< 0.0001). For Tetric EvoCeram, the amounts of BisGMA, UDMA and Bisphenol A were higher when polymerizing with LED compared to halogen. The release of substances was more material dependent and less influenced by the curing unit used.
AB - Purpose: To evaluate the release of monomers from four different composite materials (Ceram X, Filtek Supreme XT, Tetric Flow, Tetric EvoCeram), polymerized using either halogen or LED unit. Methods: Ten specimens were made for each material/unit combination. Each specimen was stored in 1 ml 75% ethanol. The storage medium was renewed after 1, 7 and 28 days. Aliquots of this medium were analyzed by LC-MS/MS. Results: The effect of the curing unit on monomers' release differed significantly among the materials (P< 0.0001). The amount of BisGMA and TEGDMA released from Ceram X was not influenced by the unit used (P> 0.05). Curing with LED reduced the amount of Bisphenol A released from Ceram X compared to halogen. For Filtek Supreme XT, the type of unit exerted a significant effect on the elution of BisGMA (P< 0.05). LED curing resulted in a higher release of TEGDMA and UDMA compared to halogen (P< 0.05). For Tetric Flow, LED curing resulted in lower monomer release (P< 0.0001). For Tetric EvoCeram, the amounts of BisGMA, UDMA and Bisphenol A were higher when polymerizing with LED compared to halogen. The release of substances was more material dependent and less influenced by the curing unit used.
KW - Chemistry
KW - Sustainability Science
UR - http://www.scopus.com/inward/record.url?scp=84855396257&partnerID=8YFLogxK
M3 - Journal articles
C2 - 22165461
VL - 24
SP - 315
EP - 321
JO - American Journal of Dentistry
JF - American Journal of Dentistry
SN - 0894-8275
IS - 5
ER -