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  • Current Research in Dental Sciences
  • Volume:29 Issue:1
  • THERMAL CONDUCTIVITY OF DIFFERENT COMPOSITE RESIN MATERIALS IN DIFFERENT POLYMERIZATION TIMES AND MO...

THERMAL CONDUCTIVITY OF DIFFERENT COMPOSITE RESIN MATERIALS IN DIFFERENT POLYMERIZATION TIMES AND MODES

Authors : Özcan KARATAŞ, Ömer SAĞSÖZ, Nurcan ÖZAKAR İLDAY, Yusuf Ziya BAYINDIR
Pages : 20-25
Doi:10.17567/ataunidfd.522584
View : 21 | Download : 9
Publication Date : 2019-01-15
Article Type : Research Paper
Abstract :ABSTRACT   Aim: The current study investigated the thermal conductivity of dimethacrylate - and silorane-based composite resins at different polymerization times and modes. Materials and Method: Forty dentin discs insert ignore into journalissuearticles values(8 mm diameter, 1.5 mm thick); were obtained from caries-free human molar teeth. Filtek Silorane insert ignore into journalissuearticles values(3M ESPE, Minnesota, USA); and Filtek Z550 insert ignore into journalissuearticles values(3M ESPE, Minnesota, USA); composite were polymerized with a   LED insert ignore into journalissuearticles values(Light-Emitting-Diode); curing device insert ignore into journalissuearticles values(Valo, Ultradent Products Inc., Utah, USA ); , in two modes in different times insert ignore into journalissuearticles values(xtra power mode, 3200 mW/cm 2 ; 3-, 6-, 9-, 12-, +2 s / standard mode 1000 mW/cm 2 , 10-, 20-, 30-, 40-, +2 s);insert ignore into journalissuearticles values(n=10);. Temperature changes in the dentin discs were measured with a K-type thermocouple insert ignore into journalissuearticles values( E-680, Elimko Co., Ankara, Turkey); and recorded. Data were statistically analyzed using Analysis of variance and independent sample t test insert ignore into journalissuearticles values(α=0.05); Results: Mean temperature changes were significantly different among polymerization times and modes insert ignore into journalissuearticles values(p<0.05);. Temperature change of Filtek Silorane were significantly higher than Filtek Z550 for each time interval and curing mode insert ignore into journalissuearticles values(p<0.05);.   Conclusion: As the polymerization time increases, the temperature increase in the dentin may adversely affect to the pulp health. Key Words: Thermal conductivity, dental composite   resin, LED curing unit, polymerization time FARKLI KOMPOZIT REZIN MATERYALLERIN FARKLI KÜRLEME SÜRELERINDE VE MODLARINDA TERMAL ILETKENLIKLERI ÖZ Amaç: Bu çalışmada siloran-esaslı ve dimetakrilat-esaslı kompozitlerin farklı polimerizasyon sürelerinde ve modlarında termal iletkenlikleri değerlendirildi Gereç ve Yöntem: Sağlam insan üçüncü molar dişlerinden 40 dentin disk insert ignore into journalissuearticles values(8 mm çap, 1.5 mm kalınlık); hazırlandı. Filtek Silorane insert ignore into journalissuearticles values(3M ESPE Dental Ürünleri, Minnesota, ABD); ve Filtek Z550 insert ignore into journalissuearticles values(3M ESPE Dental Ürünleri, Minnesota, ABD); kompozit örnekleri, led ışık cihazı ile insert ignore into journalissuearticles values(Valo, Ultradent Products Inc., Utah, ABD); iki farklı modda ve farklı sürelerde insert ignore into journalissuearticles values(xtra power mod, 3200 mW/cm 2 ; 3, 6, 9, 12 +2 sn / standard mod 1000 mW/cm 2 , 10, 20, 30, 40, +2 sn); polimerize edildi. Dentin örneklerindeki sıcaklık artışı, K tipi termokapıl insert ignore into journalissuearticles values(E-680, Elimko Co., Ankara, Türkiye); kullanılarak ölçüldü. Her zaman aralığı arasındaki ölçüm farkları insert ignore into journalissuearticles values(ΔT); kaydedildi. Veriler ANOVA ve bağımsız örneklem t-testi ile analiz edildi. insert ignore into journalissuearticles values(α = 0.05); Bulgular: Farklı polimerizasyon süreleri ve modları arasında ortalama sıcaklık artışları açısından anlamlı farklılıklar tespit edildi insert ignore into journalissuearticles values(p <0.05);. Filtek Silorane kompozitin polimerizasyonu sırasında tüm modlar ve zaman aralıklarında Filtek Z550\`ye kıyasla anlamlı derecede daha yüksek sıcaklık artışı görüldü insert ignore into journalissuearticles values(p <0.05);. Sonuç: Polimerizasyon süresi arttıkça dentindeki ısı artışı pulpa sağlığını olumsuz etkileyebilir. Anahtar Kelimeler: Termal iletkenlik, dental komozit rezin, LED ışık cihazı, Polimerizasyon süresi  
Keywords : Thermal conductivity, dental composite resin, LED curing unit

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