Turkiye Klinikleri Journal of Dental Sciences

.: ORIGINAL RESEARCH
Effects of Bleaching Agents on Surface Roughness and Color Change of Discolored Resin Composites
Beyazlatma Ajanlarının Renklenmiş Rezin Kompozitlerin Yüzey Pürüzlülüğü ve Renk Değişimine Etkileri
Tuğba TEMİZCİa, Makbule Tuğba TUNÇDEMİRb
aBeyhekim Oral and Dental Health Center, Konya, TURKEY
bDepartment of Restorative Dentistry, Necmettin Erbakan University Faculty of Dentistry, Konya, TURKEY
Turkiye Klinikleri J Dental Sci.2021;27(2):261-8
doi: 10.5336/dentalsci.2020-76235
Article Language: EN
Full Text
ABSTRACT
 Objective: The aim of this study was to evaluate the effects of 2 home bleaching agents [16% carbamide peroxide (CP) and 6% hydrogen peroxide (HP)] on the color change and surface roughness of discolored anterior and posterior resin composites. Material and Methods: Estelite Sigma Quick (ES) and Estelite Posterior (EP) resin composites were used in the present study. A total of 60 samples were prepared (thirty samples from each resin composite). Samples were immersed into the coffee solution throughout the 12 days. Samples were randomly divided into 3 groups, to applying 2 different bleaching agents and a control group (n=10). Bleaching agents were applied for 14 consecutive days. The color changes of the samples were measured at 3 different times, baseline (T0), after discoloration (T1) and bleaching procedures (T2). Surface roughness changes were measured at T1 and T2. Color differences were calculated using the CIEDE 2000 (ΔE00) formula. Differences were analyzed using one way, two-way analysis of variance and Tukey multiple comparison tests. Results: ΔE00 values showed significant differences after coffee immersion and bleaching applications in both resin composites (p<0.05). Immersion in coffee caused more color change in EP samples (ΔE00=12.46±0.47). Bleaching agent was a significant factor for the color recovery in ES samples (p<0.05). CP application in ES groups and HP application in EP groups increased the surface roughness (p<0.05). Conclusion: Bleaching agents used in the present study showed color recovery effect on discolored resin composites. The potential effect of bleaching agents on surface roughness and the sensitivity of the posterior resin composites to discoloration should be considered in restorative treatment.

Keywords: Bleaching; color stability; resin composite; surface roughness
ÖZET
 Amaç: Çalışmanın amacı, renklenmiş anterior ve posterior kompozitlerde 2 farklı ev tipi beyazlatma ajanının [%16 karbamid peroksit (KP) ve %6 hidrojen peroksit (HP)] renk değişimine ve yüzey pürüzlülüğüne etkisini değerlendirmektir. Gereç ve Yöntemler: Çalışmada, Estelite Sigma Quick (ES) ve Estelite Posterior (EP) kompozitleri kullanıldı. Her kompozit grubundan otuzar örnek olacak şekilde toplamda 60 örnek hazırlandı. Örnekler, 12 gün boyunca kahve solüsyonu içerisinde bekletildi. Ardından 2 farklı beyazlatma ajanı ve bir kontrol grubu olmak üzere örnekler rastgele 3 gruba ayrıldı (n=10). Renklenen örneklere, 14 gün boyunca beyazlatma ajanları uygulandı. Örneklerin renk değerleri, 3 ayrı zamanda başlangıç (T0), renklenme sonrası (T1) ve beyazlatma sonrası (T2) ölçüldü. Pürüzlülük değerleri ise T1 ve T2'de ölçüldü. Renk değişimleri CIEDE 2000 (ΔE00) formülü ile hesaplandı. Elde edilen sonuçlar, tek ve çift yönlü varyans analizi ile çoklu karşılaştırmalı Tukey testleri kullanılarak analiz edildi. Bulgular: Her 2 kompozit grubunda da kahvede bekletmeden sonra ve beyazlatma uygulamasından sonra ΔE00 değerlerinde anlamlı bir farklılık gözlemlendi (p<0,05). Kahvede bekletme EP örneklerinde daha faza renk değişikliğine neden oldu(ΔE00=12,46±0,47). ES grubunda, KP ve HP anlamlı bir farklılık gösterdi (p<0,05). ES grubunda, KP uygulaması ve EP grubunda, HP uygulaması yüzey pürüzlülüğünü artırdı (p<0,05). Sonuç: Çalışmada kullanılan her 2 beyazlatma ajanı, renklendirilmiş kompozitlerin rengi üzerinde beyazlatıcı etki gösterdi. Beyazlatıcı ajanların yüzey pürüzlülüğüne potansiyel etkisi ve posterior kompozitlerin renk değişimine duyarlılığı, restoratif tedavide göz önünde bulundurulmalıdır.

Anahtar Kelimeler: Beyazlatma; renk stabilitesi; rezin kompozit; yüzey pürüzlülüğü
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