Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi 1300-9044 2667-5161 Ataturk University 10.17567/ataunidfd.473719 Health Care Administration Sağlık Kurumları Yönetimi FARKLI ZAMAN PERİYOTLARI İLE UYGULANAN GECE KORUYUCULU VİTAL BEYAZLATMA AJANININ GİOMER RESTORATİFLERİN YÜZEY PÜRÜZLÜLÜĞÜ ÜZERİNE ETKİSİ https://orcid.org/0000-0003-2979-6068 Kara Dilan https://orcid.org/0000-0002-5447-3159 Tekçe Neslihan https://orcid.org/0000-0002-6748-6530 Koçak Aslıhan https://orcid.org/0000-0003-1883-5172 Özel Emre 10 14 2018 28 4 462 468 04 17 2017 02 15 2018 Copyright © 1986, Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi 1986 Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

Amaç: Bu çalışmanın amacı, farklı zaman periyotları ile uygulanan gecekoruyuculu beyazlatma ajanının üç posterior restoratif materyalin yüzey pürüzlülüğüüzerine etkisini incelemektirGereç ve Yöntem: Üç farklı tipte posterior restoratif materyalden [Beautifil-Bulk Restorative (giomer bulk-fill), Beautifil II (giomer posterior) ve Aelite LS Poste- rior (hibrit kompozit rezin)] toplam 90 adet kompozit rezin (disk örneği (8 mm çapında, 2 mm kalınlıkta) hazırlanmıştır (n=30). Her bir materyal %16 karbamid peroksit ağartma maddesi içeren Opalescence PF’nin disklere uygulama prosedürlerine göre üç alt gruba ayrılmıştır (n=10). Grup-1: başlangıç ölçümleri; Grup-2: 7 gün boyunca günde 4 saat %16 Opalescence PF uygulaması; Grup-3: 7 gün boyunca günde 6 saat % 16 Opalescence PF uygulaması. Grupların yüzey pürüz- lülük ölçümleri 24 saat ve 1 hafta sonunda profilo- metre (Ra, mm) ile yapılmıştır. Veriler, iki yönlü var- yans analizi (ANOVA) ve Tukey's HSD post-hoc testi ile istatistiksel olarak analiz edilmiştir (p<0.05).Bulgular: Başlangıç zaman diliminde, Aelite LS Poste- rior (0.87 Ra),Beautifil-Bulk Restorative (0.70 Ra) ve Beautifil II (0.65 Ra) materyallerininyüzey pürüzlülük değerleri istatistiksel olarak benzerbulunmuştur (p>0.05). Grup-2 ve Grup-3'te de bu üç materyalin yü- zeypürüzlülük değerleri benzerdir. Fakat, Beautifil II’ye 7 gün boyunca 6 saat %16Opalescence PF uygulaması sonrasında yüzey pürüzlülüğü önemli düzeyde artmıştır(0.65 Ra’dan 0.95 Ra’ya) (p <0.05).Sonuç: Beautifil-Bulk Restorative ve Aelite LS Posterior,uygulanan test periyotları boyunca yüzey pürüzlülük değişimlerine karşıstabildir. Fakat, Beautifil II’nin %16 Opalescence PF’nin bir hafta boyuncagünde 6 saat uygulanmasından sonra yüzey pürüzlülük değerleri ciddi orandaartmıştır.Anahtar Kelimeler: Beyazlatma, giomerTHE EFFECT OFNIGHT-GUARD VITAL BLEACHING AGENT WITH DIFFERENT TIMING PERIODS ON SURFACEROUGHNESS OF GIOMER RESTORATIVESAim: The aim of this study was toexamine the effect of night-guard vital bleaching agent with different timingperiods on the surface roughness of three posterior restoratives.Material and Methods: A total of 90composite resin disc specimens (8 mm in diameter, 2 mm in thickness) wereprepared from three different types of restoratives [Beautifil-Bulk Restorative (giomer bulk-fill),Beautifil II (giomer posterior) ve Aelite LS Posterior (hybrid resin composite)] (n=30). Each groupwas divided into three subgroups according to application procedures of 16%carbamide peroxide Opalescence PF bleaching agent (n=10). Group-1: baselinemeasurements; Group-2: 4 hours/day for 7-day;Group-3: 6 hours/day for 7-day. Measurements were conducted at 24-h and1 week using a profilometer (Ra, mm). The values werestatistically analysed with two ANOVA and Tukey’s HSD post-hoc test(p<0,05). Results: At baseline, surface roughnessvalues of Aelite LS Posterior (0.87 Ra), Beautifil-Bulk Restorative (0.70 Ra)and Beautifil II (0.65 Ra) were found statistically similar (p>0.05). Surface roughness values of these three materials also were foundstatistically similar for Group-2 and Group-3. However, the values increasedsignificantly for Beautifil II (0.65 Ra to 0.95 Ra) after bleaching agentapplication for 6 hours per day along 7-day (p<0.05).Conclusion: Beautifil-Bulk Restorative andAelite LS Posterior are durable against surface roughness changes in thefollowing test periods. However, surface roughness values of Beautifil IIincrease significantly after using 16% Opalescence PF 6 hours per day for oneweek. Keywords: Bleaching, giomer, surface roughness

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