Amaç: Bu çalışmanın amacı, kalsiyum silikat içerikli pulpa kapaklama materyallerinin farklı adeziv sistemler kullanılarak kompozit rezinlere makaslama bağlanma dayanımını değerlendirmektir. Gereç ve Yöntemler: Yüz seksen adet merkezinde boşluk olan akrilik rezin blok hazırlandı. Akrilik rezin bloklar 3 gruba ayrıldı ve kalsiyum silikat içerikli materyallerden (ProRoot MTA, Biodentin, TheraCal LC) biri ile dolduruldu. Bu örnekler daha sonra kullanılan adeziv sistem (total-etch, 2 aşamalı self-etch ve üniversal adeziv) ve kompozit rezinlere (6 grup, n=10) göre alt gruplara ayrıldı. Adeziv sistemler uygulandı ve üniversal (Estelite Sigma Quick, Tokuyama) veya akışkan kompozit rezin (Estelite Universal Flow, Tokuyama) tabakalı olarak yerleştirildi ve 20 sn ışıkla sertleştirildi. Daha sonra tüm örnekler 5.000 termal döngü ile yaşlandırmaya tabi tutuldu. Numuneler daha sonra üniversal test cihazı kullanılarak makaslama bağlanma dayanımı açısından değerlendirildi. Bulgular: Üç-yönlü ANOVA sonuçları, totaletch adeziv ile üniversal kompozit rezine bağlanan ProRoot MTA'nın en yüksek makaslama bağlanma kuvvetine sahip olduğunu ve en düşük makaslama bağlanma kuvveti değerinin 2 aşamalı self-ech adeziv ile üniversal kompozite bağlanan TheraCal LC'de gözlendi (p<0,05). Sonuç: Termal yaşlandırma sonrasında TheraCal LC gruplarında çoğunlukla koheziv kırılma görüldü. Biodentin ve MTA ile karşılaştırıldığında, TheraCal LC total-etch ve 2 aşamalı self-etch adeziv kullanılarak üniversal kompozit rezine bağlanan gruplarda daha fazla makaslama bağlanma dayanımı değerleri daha düşüktü.
Anahtar Kelimeler: Dental pulpa kapaklama; mineral trioksit agregat; kalsiyum silikat
Objective: The aim of this study was to evaluate the shear bond strength of calcium silicate-based pulp capping materials bonded to composite resins with different adhesive systems. Material and Methods: A total of 180 acrylic resin blocks were prepared with a central hole. Acrylic resin blocks were divided into three groups and each group filled with one of the three calcium silicate-based materials (ProRoot MTA, Biodentine, TheraCal LC). These samples were then subdivided according to the adhesive systems (total-etch, 2 step selfetch, and universal adhesive) and composite resins used (6 groups, n=10). Adhesive systems were applied and universal (Estelite Sigma Quick, Tokuyama) or flowable (Estelite Universal Flow, Tokuyama) composite resin was placed incrementally and light-cured for 20 s. After that, all specimens were subjected to 5,000 thermal aging cycles. The specimens were then evaluated for shear bond strength using a universal testing machine. Results: Three-way ANOVA results revealed that the ProRoot MTA bonded to the universal composite resin with a totaletch adhesive had the highest shear bond strength, and the lowest mean shear bond strength value was observed in the TheraCal LC bonded to the universal composite resin with a two-step self-etch adhesive (p<0.05). Conclusion: TheraCal LC groups showed mainly cohesive fracture after thermal aging. Shear bond strength values were lower in groups bonded to the universal composite resin using TheraCal LC with total-etch and two-step self-etch adhesive compared to Biodentine and ProRoot MTA.
Keywords: Dental pulp capping; mineral trioxide aggregate; calcium silicate
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