Residual monomer release from orthodontic adhesives cured with different light sources
Küçük Resim Yok
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
TAYLOR & FRANCIS LTD
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Introduction: The aim of this study was to evaluate the residual monomer release from orthodontic adhesives cured with light-emitting diode (LED) and halogen light sources.Methods: Seven hundred and twenty stainless steel brackets were divided into 3 groups according to the adhesive system used (Transbond XT light-cure adhesive [TXT], Transbond LR capsule [LR], and Light Bond light-cure adhesive paste [LB]), and each group was divided into 2 subgroups according to light-curing procedure (LED or halogen). Brackets were bonded with adhesives onto tooth buccal surfaces and polymerized. Each specimen contained 24 brackets that simulated the oral environment (n=5). The specimens were immersed in a 75% ethanol/water solution at 37 degrees C for 10min, 1h, 1 d, 7 d, 14 d, and 30 d, respectively. Eluted monomers (Bis-GMA, UDMA, and TEGDMA) were detected using HPLC.Results: There was residual monomer release at all time periods, and the highest amount of release was observed cumulatively on the 30th day. The cumulative Bis-GMA released from adhesives was not different (p>0.05). The cumulative TEGDMA released from adhesives was statistically different (p<0.05). There was no statistical difference between QTH and LED light-curing units for each adhesive (p>0.05).Conclusions: The release of residual monomers stays at a high level for a long time after polymerization. The total leaching of residual monomers from the Light Bond light-cure sealant resin plus Light Bond light-cure adhesive paste was higher than that of other materials for both curing units. Different curing units (LED or QTH) did not affect the monomer release from the orthodontic adhesives.
Açıklama
Anahtar Kelimeler
Bis-GMA, TEGDMA, UDMA, residual monomer, orthodontic adhesives, HPLC
Kaynak
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
30
Sayı
12
