Elif Türkeş Başaran, Burcu Dikici, Esra Can

Farklı yapıdaki rezin kompozit ve CAD/CAM materyallerinin renk stabilitelerinin incelenmesi

Amaç: : Bu in vitro çalışmanın amacı kahve ve kırmızı şara- bın mikro-hibrit (G-aenial;GC), hibrit (Fantasista;Sun Med.), nano-hibrit (GrandioSO;VoCo), nano-seramik (CeramX Duo;- Dentsply Sirona) ve mikrofil (Metafil CX;Sun Medikal) yapıdaki rezin kompozit materyalleri ile nano-seramik hibrit CAD/CAM (Grandio Blocs;VoCo) materyalinin renk stabilitesi üzerine et- kisini incelemektir. Gereç ve Yöntem: SÇalışmada beş farklı rezin kompozit ma- teryalinden metal kalıplar kullanılarak 8x2 mm boyutlarında 30’ar örnek hazırlandı. Nano-seramik hibrit CAD/CAM örnek- leri ise bloklardan kesilerek (10x2x2mm) elde edildi (n=30). Tüm örneklerin başlangıç L*a*b* değerleri spektrofotomet- reyle ölçüldü ve her bir materyal grubu rastgele yapay tükü- rük (kontrol), kahve ve kırmızı şarap olmak üzere 3 gruba ayrıl- dı (n=10). Kahve ve kırmızı şarap örnekleri 6 saat solüsyonda ve 18 saat yapay tükürükte, kontrol grubundaki örnekler ise 24 saat yapay tükürükte bekletildi. 1. ve 2. haftaların sonun- da örneklerin L*a*b* ölçümleri tekrarlandı. Renk değişimi CIEL*a*b* (ΔE) ve CIEDE2000 (ΔE00) renk değerlendirme sistemlerine göre değerlendirildi. Sonuçlar istatistiksel olarak bağımlı örneklem t-testi, iki yönlü varyans analizi ve post hoc Tukey testi kullanılarak karşılaştırıldı (α=0,05). Bulgular: Tüm materyallerde, kontrol grubunda gözle algı- lanabilir düzeyde renklenme görülmezken, 1. hafta sonunda kırmızı şarapta, 2. hafta sonunda ise kırmızı şarap ve kahve- de belirgin düzeyde renk değişimi gözlendi. 2. hafta sonunda kahve solüsyonunda istatistiksel olarak en yüksek ΔE değer- leri Fantasista'da, kırmızı şarapta ise Fantasista ve G-aenial’da saptandı (p

Evaluation of color stability of resin composite and CAD/CAM materials with different structures

Aim: The aim of this study was to evaluate the effect of coffee and red wine on the color stability of micro-hybrid (G-aenial;- GC), hybrid (Fantasista;Sun Medical), nano-hybrid (Grandio- SO;VoCo), nano-ceramic (CeramX Duo;Dentsply Sirona) and microfill (Metafil CX;Sun Med) resin composites and nano-ce- ramic hybrid CAD/CAM material (Grandio Blocs;VoCo). Material and Methods: Samples (8x2mm) were prepa- red from five different resin composites and nano-ceramic hybrid CAD/CAM samples (10x2x2mm) were prepared by cutting from blocks (n=30). The initial L*a*b* values were measured by spectrophotometer. Each group was ran- domly divided into 3 subgroups as artificial saliva (cont- rol), coffee and red wine (n=10). Control group was stored in artificial saliva while experimental groups were immer- sed in solutions for 6 hours and kept in artificial saliva for 18 hours. Values were re-measured after 1-week and 2-week. Color change was calculated with CIEL*a*b* (ΔE) and CIEDE2000 (ΔE00) formulas. Statistical analyses were performed by paired samples t-test, two-way ANO- VA and post hoc Tukey test (α=0.05). Results: While there was no perceptible discoloration in all materials in control group, significant changes were observed in red wine after one week and in both red wine and coffee after two weeks. The highest ΔE values in cof- fee solution were found in Fantasista, and in red wine Fan- tasista and G-aenial (p

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