Turkiye Klinikleri Journal of Dental Sciences

.: ORIGINAL RESEARCH
Farklı Yüzey İşlemlerinin CAD/CAM Rezin Nanoseramiklerin Tamir Bağlanma Dayanımına Etkisi: Bir in vitro Çalışma
Effect of Different Surface Treatments on Repair Bond Strength of CAD/CAM Resin Nanoceramics: in vitro Study
Samet ATASOYa , Sultan AKTUĞ KARADEMİRa , Merve ARIKANa , Serdar AKARSUa
aOrdu Üniversitesi Diş Hekimliği Fakültesi, Restoratif Diş Tedavisi AD, Ordu, Türkiye
Turkiye Klinikleri J Dental Sci. 2024;30(3):472-9
doi: 10.5336/dentalsci.2024-102009
Article Language: TR
Full Text
ÖZET
 Amaç: Rezin nanoseramik CAD/CAM (RNC) materyaller, tamir kolaylığı ve uygun fiyatları nedeniyle günümüzde indirekt restorasyonlarda yaygın olarak kullanılmaktadır. Bu çalışmanın amacı, RNC materyale uygulanan farklı yüzey işlemlerinin ve silan uygulanmasının kompozit rezin ile tamir bağlanma dayanımı [repair bond strength (RBS)] üzerine etkisini değerlendirmektir. Gereç ve Yöntemler: RNC bloklar (CeraSmart, GC Corp., Tokyo, Japonya) kullanılarak toplam 60 örnek (2×7×12 mm) hazırlandı ve 5.000 termal siklusla yaşlandırıldı. Örnekler yüzey işlemlerine göre rastgele 3 gruba (n=20) ayrıldı: (1) Kontrol, işlem yapılmamış, (2) Al2O3 partikülleri ile kumlama, (3) Frezle pürüzlendirme. Ardından her grup ilave silan uygulamasına göre rastgele 2 alt gruba ayrıldı (n=10). Tüm örnekler 2x3,5 mm nanohibritkompozit (Clearfil Majesty Posterior, Kuraray Noritake Dental Inc., Japonya) ile tamir edildi ve RBS testi evrensel test cihazı (Autograph AGS-X, Shimadzu Co, Kyoto, Japonya) kullanılarak gerçekleştirildi. Kopma yüzeyleri stereomikroskop (MP 320; Carl Zeiss, Oberkochen, Almanya) kullanılarak x50 büyütmede analiz edildi. Veriler iki yönlü varyans, Tukey ve bağımsız-t testleri kullanılarak analiz edildi (p=0,05). Bulgular: Yüzey işlemi uygulanmış Grup 2 ve 3, kontrol grubu olan 1'e göre anlamlı ölçüde daha yüksek RBS sergiledi (p<0,05). Grup 2'de en yüksek RBS değerleri görülmesine rağmen Grup 2 ile 3 arasında anlamlı fark yoktu (p>0,05). Bununla birlikte ilave silan uygulanan gruplarda daha fazla RBS değerleri görülmüştür ve bu fark istatistiksel olarak anlamlıdır (p<0,001). Sonuç: Al2O3 kumlama veya frezle pürüzlendirme işlemleri RNC'lerin tamirinde gereklidir. Yüzey işlemleri sonrasında ilave silan uygulaması RNC'lerin RBS değerlerini önemli ölçüde artırır.

Anahtar Kelimeler: Bağlanma dayanımı; tamir; rezin nanoseramik; yüzey işlemi
ABSTRACT
 Objective: Resin nanoceramic CAD/CAM (RNC) materials are widely used in indirect restorations today for reasons such as ease of repair and price availability. The aim of the study is to evaluate the effect of different surface treatments and silane application on repair bond strength (RBS) of composite resin to RNC material. Material and Methods: A total of 60 samples (2×7×12 mm) were prepared from RNC blocks (Cerasmart, GC Dental Products, Japan) and subjected to 5,000 thermal cycles. The samples were randomly divided into 3 groups (n=20) according to surface treatment: (1) Control, untreated, (2) Sandblasting with Al2O3 particles, (3) Roughening with a diamond bur. Then, each group was divided into two subgroups according to additional silane application (n=10). All samples were repaired with a 2x3.5 mm nanohybrid composite (Clearfil Majesty Posterior, Kuraray Noritake Dental Inc., Japan) and a universal testing machine (Autograph AGS-X, Shimadzu Co, Kyoto, Japan) was used to test the RBS. Fracture surfaces were examined using a stereomicroscope (MP 320; Carl Zeiss, Oberkochen, Germany) at x50 magnification. Data were analyzed with two-way variance, Tukey and independent-t tests (p=0.05). Results: The surface treated groups 2 and 3 exhibited significantly higher RBS than Group 1, the control group (p<0.05). Although Group 2 had the highest RBS, there was no significant difference between Group 2 and 3 (p>0.05). Higher RBS values were observed in the groups where additional silane was applied and this difference was statistically significant (p<0.001). Conclusion: Sandblasting with Al2O3 or roughening with a diamond bur significantly increase the RBS of RNC. Silane has a synergistic effect when applied in combination with surface treatments.

Keywords: Bond strength; repair; resin nanoceramic; surface treatment
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