Günçe SAYGI, Pınar KARAKOÇ, İşıl SERBES, Sevda ÖZEL, Uğur ERDEMİR, Taner YÜCEL

Nano-Hibrit Bir Kompozitin Renkleşmesinde Yüzey Örtücülerin Etkisi

Amaç: Bu çalışmada nanohibrit yapıda bir reçine kompozit yüzeyine uygulanan yüzey örtücülerin ve dentin bağlayıcı ajan uygulanmasının; kompozitin (Filtek Z550) renkleşmeye karşı direnci üzerine etkisinin araştırılması amaçlanmıştır.Gereç ve Yöntem: Çalışmada 28 adet Filtek Z550 nano hibrit kompozitten hazırlanan disk biçimindeki örnekler 4 gruba ayrılmıştır: G1K: yüzey örtücü uygulanmamış; G2:Adper Single Bond, G3:Fortify, G4: Biscover LV. 24 saat 37˚C de distile suda bekletilip termosiklus uygulanan örnekler daha sonra günde 3 kere olmak üzere toplam 28 gün kahve solüsyonunda bekletilmişlerdir.Bulgular: Başlangıç değerleri dışında, gruplar arası renk değişim değerleri, tüm zaman aralıklarında istatistiksel olarak anlamlı derecede farklı bulunmuştur (p < 0.05). 7 günün sonunda, gruplar karşılaştırıldığında G3 ve G4 grupları arasında istatistiksel olarak anlamlı derecede fark bulunmuştur. G4 grubu 14 günün sonunda kontrol grubuna göre istatistiksel olarak anlamlı derecede farklılık göstermiştir. Ancak 28 günlük deney sonucunda, GIII (p < 0.05) ve GIV (p < 0.0001) gruplarına ait ∆E değerleri istatistiksel olarak kontrol grubuna göre anlamlı bulunmuştur.Sonuç: Bağlayıcı ajanın yüzey örtücü olarak kullanılmasının kompozitin renkleşmeye karşı direncini yeterli düzeyde arttırmadığı, Biscover LV yüzey örtücünün kompozitin renk stabilitesinin uzun dönem sağlanmasında en yüksek değerleri verdiği sonucuna varılmıştır

Anahtar Kelimeler:

Renk, yüzey örtücü, renkleşme, kompozit, kahve

EFFECT OF SURFACE SEALING ON STAIN RESISTANCE OF A NANO-HYBRID RESIN COMPOSITE

Purpose: This study investigated the influence ofsealant application on stain resistance of a nanohybridresin composite compared to the efficacy of abonding agent used as a surface sealant on prolongingcolor stability of the resin composite.Materials and Methods: 28 disc-shaped materialswere prepared from a nano-hybrid resin compositeFiltek Z550 and assigned to four groups: G1K: nonsealed;G2:Adper Single Bond; G3: Fortify ; G4:Biscover LV. After 24 h storage in distilled water at37˚C, all specimens were subjected to thermocyclingand immersed into coffee solution. Color measurementswere performed using spectrophotometer (VITAEasyshade; Vident) according to CIEL*a*b* system.Results: Color change values were significantlydifferent among the groups in each evaluation periodexcept for after thermocycling (p<0.05). For 7 daysevaluation period, the difference between G3 and G4group was statistically significant while G4 exhibitedstatistically significant differences (p<0.05 andp<0.0001 respectively) compared to control (G1) in14 day whereas no significant difference was foundbetween GI and GII in 28-day evaluation period.However, ΔE values of sealed specimens (GIII, GIV)differed significantly from non-sealed (GI) specimensafter 28 days of immersion in coffee solution (p<0.05and p<0.0001 respectively).Conclusion: It may be concluded that using abonding agent as a surface sealant does not increasestain resistance of resin composites of the sealantsevaluated. Biscover LV showed the highest efficacyto prolong color stability of the resin composite.

Keywords:

Color; surface sealant; discoloration; composite; coffee,

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