Zeliha Gonca BEK KÜRKLÜ, Ceren KALKAN DEVECİ

6832

Yeni bir kompozit restoratif materyalin mikrosertlik ve Bis-GMA salımı yönünden değerlendirilmesi

Amaç: Bu çalışmanın amacı posterior restorasyon için üretilen yeni mikrohibrit bir kompozitin mikrosertlik, dönüşüm derecesi ve Bis-GMA salımını sıkça kullanılan mikrohibrit bir kompozit materyal ile karşılaştırmaktır.Gereç ve Yöntem: Bu çalışmada mikrohibrit doldurucu içerikli yeni üretilmiş (NOVA Compo-HS, Imicryl, Konya, Türkiye) ve piyasada bulunan mikrohibrit doldurucu içeren başka bir kompozit rezin materyeli (Filtek Z-250, 3M ESPE, St. Paul, MN, ABD) kullanıldı. Her bir materyalden silindir şeklinde (2x2x2 mm boyutlarında) 20’şer örnek hazırlandı. Her materyal için hazırlanan 20 örnekten 10 adetinde salınan Bis-GMA miktarı yüksek performanslı sıvı kromatografisi (HPLC) (Shimadzu, Model SPD 20A, Shimadzu Corporation, Kyoto, Japonya) ile analiz edildi. Her materyal için geri kalan diğer 10 örneğin Vickers yüzey mikrosertlik dereceleri ölçüldü ve polimerizasyon derinliği Vickers sertlik oranı hesaplanarak değerlendirildi. İstatistiksel analizler bağımsız gruplar t-testi ile yapıldı.Bulgular: NOVA Compo-HS ve Filtek Z250 arasında üst ve alt yüzeylerde kaydedilen sertlik değerlerinde istatistiksel bir fark olduğu görüldü (p<0.001). NOVA Compo-HS ve Filtek Z250 kompozitlerine ait Bis-GMA salım miktarı ortalama 1.28 mg/L ve 0.78 mg/L idi. Gruplar arasında istatistiksel olarak fark vardı (p<0.001). Sonuç: Mikro dolduruculu yeni kompozit rezin materyal olan NOVA Compo-HS, mekanik özellikleri (yüzey mikrosertlik dereceleri ve alt/üst yüzeyin Vickers mikrosertlik oranı) bakımından diğer mikro dolduruculu kompozit kadar yeterli bulunmadı. NOVA Compo-HS kompozitten salınan Bis-GMA monomer miktarı, Filtek Z250’ye göre daha fazlaydı.
Anahtar Kelimeler:

Bis-GMA, HPLC, kompozit dental rezin, sağlamlık testleri

Evaluation of microhardness and Bis-GMA release of a new composite restorative material

Objective: The aim of this study is to compare the microhardness, the degree of conversion and the elution of Bis-GMA of a new microhybrid composite for posterior restoration with a commonly used microhybrid composite material.Materials and Method: In this study, a newly manufactured composite resin material with a microhybrid filler content (NOVA Compo-HS, Imicryl, Konya, Turkey) and another commercially available composite resin material containing microhybrid filler (Filtek Z-250, 3M ESPE, St. Paul, MN, USA) were used. 20 samples of each material were prepared in cylindrical form (2x2x2 mm). The amount of the eluted Bis-GMA from ten of the 20 samples for each material was analyzed by high performance liquid chromatography (HPLC) (Shimadzu, Model SPD 20A, Shimadzu Corporation, Kyoto, Japan). The Vickers surface microhardness of the other remaining ten of 20 samples for each material was measured and the polymerization depth was evaluated by calculating the Vickers hardness ratio. The statistical analysis was performed with two independent samples t-test.Results: There were differences between NOVA Compo-HS and Filtek Z250 in hardness values recorded on the upper and lower surfaces (p<0.001). The amount of eluted Bis-GMA monomer from NOVA Compo-HS and Filtek Z250 was 1.28 mg/L and 0.78 mg/L. There was a statistically difference between the groups (p<0.001). Conclusion: NOVA Compo-HS, a new composite resin material with microfiller, was not found as sufficient as the other microfiller composite for the mechanical properties (surface microhardness and the ratio of bottom/top surface hardness values). The amount of eluted Bis-GMA monomers was higher in the NOVA Compo-HS composite than the Filtek Z250.
Keywords:

HPLC, Bis-GMA, composite dental resin, hardness tests,

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Acta Odontologica Turcica-Cover
  • Yayın Aralığı: Yılda 3 Sayı
  • Başlangıç: 1984
  • Yayıncı: Gazi Üniversitesi Diş Hekimliği Fakültesi Dergisi
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