Öz

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

Öz

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

Anahtar Kelimeler

• bleaching, resin composite, color, discoloration

Kaynakça

1. Gresnigt MM, Kalk W, Ozcan M. Randomized controlled split-mouth clinical trial of direct laminate veneers with two micro-hybrid resin composites. J Dent 2012;40(9):766-75.
2. Martin N, Jedynakiewicz NM, Fisher AC. Hygroscopic expansion and solubility of composite restoratives. Dent Mater 2003;19(2):77-86.
3. Villalta P, Lu H, Okte Z, Garcia-Godoy F, Powers JM. Effects of staining and bleaching on color change of dental composite resins. J Prosthet Dent 2006;95(2):137-42.
4. Iazzetti G, Burgess JO, Gardiner D, Ripps A. Color stability of fluoride- containing restorative materials. Oper Dent 2000 Nov-Dec;25(6):520-5.
5. Abu-Bakr N, Han L, Okamoto A, Iwaku M. Color stability of compomer after immersion in various media. J Esthet Dent. 2000;12(5):258-63.
6. Fujita M, Kawakami S, Noda M, Sano H. Color change of newly developed esthetic restorative material immersed in food-simulating solutions. Dental Mater J 2006;25(2):352-9.
7. Tunc ES, Bayrak S, Guler AU, Tuloglu N. The effects of children’s drinks on the color stability of various restorative materials. J Clin Pediatr Dent 2009;34(2):147-50.
8. Domingos PA, Garcia PP, Oliveira AL, Palma-Dibb RG. Composite resin color stability: influence of light sources and immersion media. J Appl Oral Sci 2011;19(3):204-11.

9. Gurgan S, Yalcin F. The effect of 2 different bleaching regimens on the surface roughness and hardness of tooth- colored restorative materials. Quintessence Int 2007;38(2):83-7.
10. Li Q, Yu H, Wang Y. Colour and surface analysis of carbamide peroxide bleaching effects on the dental restorative materials in situ. J Dent 2009;37(5):348-56.
11. Garoushi S, Lassila L, Hatem M, Shembesh M, Baady L, Salim Z, et al. Influence of staining solutions and whitening procedures on discoloration of hybrid composite resins. Acta Odontol Scand 2013;71(1):144-50.
12. Rosentritt M, Lang R, Plein T, Behr M, Handel G. Discoloration of restorative materials after bleaching application. Quintessence Int 2005;36(1):33-9.
13. Celik C, Yuzugullu B, Erkut S, Yazici AR. Effect of bleaching on staining susceptibility of resin composite restorative materials. J Esthetic Restor Dent 2009;21(6):407-14.
14. Hachiya Y, Iwaku M, Hosoda H, Fusayama T. Relation of finish to discoloration of composite resins J Prosthet Dent 1984;52(6):811-4.
15. Fontes ST, Fernandez MR, de Moura CM, Meireles SS. Color stability of a nanofill composite: effect of different immersion media. J Appl Oral Sci 2009;17(5):388-91.
16. Fay RM, Servos T, Powers JM. Color of restorative materials after staining and bleaching. Oper Dent 1999;24(5):292-6.
17. Seghi RR, Hewlett ER, Kim J. Visual and instrumental colorimetric assessments of small color differences on translucent dental porcelain. J Dent Res1989;68(12):1760-4.
18. Yu H, Pan X, Lin Y, Li Q, Hussain M, Wang Y. Effects of carbamide peroxide on the staining susceptibility of tooth-colored restorative materials. Oper Dent 2009;34(1):72-82.
19. Gerlach RW, Gibb RD, Sagel PA. A randomized clinical trial comparing a novel 5.3% hydrogen peroxide whitening strip to 10%, 15%, and 20% carbamide peroxide tray-based bleaching systems. Compend Contin Educ Dent Suppl 2000(29): 22-8.