Evrim ELİGÜZELOĞLU DALKILIÇ, Fehime ALKAN, Hacer DENİZ ARISU

BULK-FİLL KOMPOZİTLERDE KALINLIĞIN ARTIŞININ MİKROSERTLİK ÜZERİNE ETKİSİ

Amaç: Bu çalışmanın amacı üç farklı ışık cihazı ile polimerize edilen bulk-fill kompozitlerde, kalınlığın artışının mikrosertlik üzerine etkisinin incelenmesidir. Gereç ve Yöntemler:İki farklı bulk-fill kompozit (Tetric Evo Ceram Bulk Fill, X-trafil) ve bir adet akışkan bulk-fill kompozit (SDR) kullanıldı. Kompozitler 1mm derinliğinde 5 mm çapında, dört metal kalıba yerleştirilerek iki farklı LED ışık cihazı (Blue Phase and Valo) ve bir adet halojen ışık cihazı (Hilux) ile polimerize edildi. Örnekler 24 saat 37°C’de %100 nemli ortamda bekletildi. Vickers sertlik ölçümleri 5 saniye 100 gr kuvvet uygulanarak yapıldı. Her örneğin hem üst hem de alt yüzeyinden 3 ölçüm yapıldı. Elde edilen veriler 0.05 istatistik seviyede analiz edildi. Bulgular:Hem üst hemde alt yüzeylerde bütün ışık cihazları ile polimerize edilen X-tra fill diğer gruplara göre belirgin düzeyde yüksek sertlik değerleri göstermiştir (p<0.05). SDR dışında ışık cihazlarındaki farklılık kompozit gruplarının sertliğini değiştirmemiştir (p>0.05). Sadece SDR, Blue phase ile polimerize edildiğinde diğer ışık cihazlarına göre daha düşük sertik değerleri göstermiştir (p<0.05). Kompozit tabakaları ile sertlik arasındaki ilişki incelendiğinde, halojen ile polimerize edilen Tetric Evo Ceram ve X-trafill kompozitlerin 1. ve 4. mm’de sertlikte belirgin düzeyde fark gözlenmiştir (p<0.05). Halojen ile polimerize edilen SDR kompozit örneklerinde fark tespit edilmemiştir (p>0.05).Sonuçlar: Kompozitlerin sertlikleri materyal, ışık cihazı ve derinliğe bağlı olarak değişmektedirAnahtar Kelimeler: kompozit rezin, dental ışık cihazları, sertlik testi

Anahtar Kelimeler:

kompozit rezin, dental ışık cihazları, mikrosertlik testi

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