Rezin Kompozit ile Tamir Edilen CAD/CAM Bloklarının Bağlanma Dayanımının Değerlendirilmesi

Year 2021, Volume: 5 Issue: 2, 70 - 77, 30.12.2021

Ezgi Tüter Bayraktar , Ayşe Aslı Şenol , Pınar Yılmaz Atalı , Bilge Tarçın , Cafer Türkmen

https://doi.org/10.29228/erd.16

Abstract

Amaç: Bu çalışmada, universal adeziv sistem kullanılarak, nano-hibrit rezin kompozit ile tamir edilen CAD/CAM blokların bağlanma dayanımı (SBS) değerlendirilmiştir.
Gereç ve Yöntemler: Dört rezin esaslı CAD/CAM blok (Hc Block, Shofu; Cerasmart, GC corp.; Lava Ultimate, 3M; Brilliant Crios, Coltene) kullanılarak 3 mm kalınlığında numuneler hazırlandı (n=10). Bitim işlemi uygulanan numuneler termal siklus ile yaşlandırıldıktan sonra elmas frezler ile pürüzlendirildi. Self-etch modunda universal bir adeziv ajan (OptiBond Universal, Kerr) uygulandı. Tamir için rezin kompozit materyal (Harmonize, Kerr) silikon kalıplara yerleştirildi, polimerize edildi ve 24 saat bekletildi. İlave termal siklus prosedürünü takiben universal test cihazında (AGS-X Universal, Shimadzu) kopma oluşana kadar yük uygulandı. Kopma tipi stereomikroskop (Leica MZ 75, Leica Microsystems) kullanılarak x20 büyütme altında belirlendi. İstatistiksel analiz Fisher's Exact, Kolmogorov-Smirnov ve Kruskal Wallis testleri ile yapıldı (p<0,05).
Bulgular: Test edilen gruplar için kopma tipleri arasındaki fark istatistiksel olarak anlamlı değildi (p<0,05). Cerasmart-Lava Ultimate, Cerasmart-Hc Block grupları arasındaki fark istatistiksel olarak anlamlıydı (p<0,05). En yüksek SBS değeri Hc Blok grubunda (12.2±7.6 MPa) ölçülürken, en düşük değer Cerasmart grubunda (5,1±4.8 MPa) gözlenmiştir.
Sonuçlar: Bu çalışma şartları altında, rezin easalı CAD/CAM blok tipi tamir uygulamasında SBS değerini etkilemiştir. Harmonize kompozit ile tamir edilen Cerasmart bloklarda diğer üç CAD/CAM blok tamirinde elde edilen bağlanma dayanımına ulaşılmamıştır.

Keywords

CAD/CAM Blok, Makaslama Bağlanma Dayanımı, Tamir

Evaluation of Shear Bond Strength of Resin-Based CAD/CAM Blocks Repaired with Resin Composite

Abstract

Objectives: Shear bond strength (SBS) of repaired resin-based CAD/CAM blocks with a resin composite is evaluated in this in-vitro study.
Materials and Methods: Resin-based CAD/CAM blocks (Hc Block, Shofu; Cerasmart, GC corp.; Lava Ultimate, 3M; Brilliant Crios, Coltene) were used (n=10). Specimens were prepared and aged with thermocycling. Specimens were roughened by using diamond burs and adhesive agent (OptiBond Universal, Kerr) was applied. Resin composite material was placed onto the roughened surface by using silicone molds for the repair procedure. After 24 hours, second thermocycling procedure was applied and loaded in an AGS-X Universal testing machine (Shimadzu; crosshead speed of 1 mm/min) until failure occurred. Leica MZ 75 stereomicroscope (Leica Microsystems; x20 magnification) was used for the determination of failure type. Kruskal Wallis, Kolmogorov-Smirnov and Fisher’s Exact tests was used for statistical analysis (p<0.05).
Results: Failure type differences were not statistically significant for the tested groups (p<0.05); however, multiple comparisons for the Cerasmart-Lava Ultimate and Cerasmart-Hc Block groups showed statistically significant differences (p<0.05). The highest SBS was measured for the Hc Block group (12.2±7.6 MPa) whereas the lowest was for the Cerasmart group (5.1±4.8 MPa).
Conclusions: Within the limitations of this study, the resin-based CAD/CAM block type affected the repair SBS value and the bond strength obtained in Cerasmart blocks repaired with Harmonize composite was lower than those obtained in the other three CAD/CAM blocks.

Keywords

CAD/CAM Block, Repair, Shear Bond Strength

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