Funda Öztürk BOZKURT, Tuğba Toz AKALIN, Burcu GÖZETİCİ, Gencay GENÇ, Harika Gözükara BAĞ

The Effect of Bleaching Treatment and Tea on Color Stability of Two Different Resin Composites

Amaç: Bu çalışmanın amacı beyazlatma tedavisinin iki farklı rezin kompozitin renklenmesi üzerine etkisini değerlendirmektir. Gereç ve Yöntem: GC Kalore (GC Dental, Tokyo, Japan) ve Filtek Z550 (3M ESPE, Seefeld, Germany) kullanılarak yirmidört adet örnek hazırlanmıştır. Örneklerin on iki tanesine ofis tipi beyazlatma (Perfection White, Premier Dental, USA) yapılırken, kalan on iki örneğe yapılmamıştır. Spektrofotometre kullanılarak CIE L*a*b* renk aralığında başlangıç renk ölçümleri yapılmıştır. Tüm örnekler ice tea (Lipton Ice Tea, Turkey) içinde bekletilmiş, 1. ve 7. gün sonunda renk değerleri tekrar elde edilmiştir. Çayda bekletme prosedürü sonunda tüm örneklere ev tipi beyazlatma uygulaması yapılarak renk ölçümü yapılmıştır. İstatiksel analiz için Varyans analizi ve Bonferroni düzeltmesi kullanılmıştır. Bulgular: Her iki rezin kompozitte 1. ve 7. gün sonunda renk değişimi olmuştur fakat 1. ve 7. gün yapılan ölçümler arasında istatiksel olarak anlamlı bir farklılık yoktur (p>0.05). Z550’nin renk değişimi GC Kalore’den istatiksel olarak anlamlı derecede yüksektir. (p<0.05). Sonuç: Bu çalışmanın sonuçları ev tipi beyazlatma tedavisinin her iki restoratif grubunda renk değişimine etkisi olmadığını göstermiştir. Fakat renklenme sonrası tekrarlanan beyazlatmanın renklenmesinin giderilmesine olumlu etkisi olmuştur

Anahtar Kelimeler:

beyazlatma, rezin kompozit, renk, renklenme

The Effect of Bleaching Treatment and Tea on Color Stability of Two Different Resin Composites

Aim: The aim of this study was to evaluate the staining susceptibility of two resin composites after bleaching procedure. Materials and Methods: Twenty four specimens were prepared from GC Kalore (GC Dental, Tokyo, Japan) and Filtek Z550 (3M ESPE, Seefeld, Germany). Twelve of the specimens were bleached with an office bleaching agent (Perfection White, Premier Dental, USA) whereas twelve of them were not. Color measurement was done using reflectance spectrophotometer based on the CIE L*a*b* color scale at baseline. All the specimens were immersed ice tea (Lipton Ice Tea, Turkey) and at the end of 1 and 7 days, color values were obtained again. After tea immersion procedure office bleaching was applied to all specimens and the color values were measured again. Analysis of variance and Bonferroni Correction were used for statistical analysis. Results: Both resin composites showed color change after a period 1 to 7 days however no significant differences were found between 1 and 7 days immersion (p>0.05). Z550 exhibited significantly higher color change than GC Kalore (p<0.05). Conclusion: The results of this study concluded that bleaching treatment did not caused any color change for both restorative groups. However the repeated bleaching procedure which was done following staining protocol had a favorable effect on the elimination of discoloration

Keywords:

bleaching, resin composite, color, discoloration,

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