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BE- FARKLI KOR MATERYALİNİN ÇAPSAL GERİLİM, BÜKÜLME VE SIKIŞTIRMA DİRENCİNİN KARŞILAŞTIRILMASI

COMPARISON OF DIAMETRAL TENSILE, FLEXURAL, AND COMPRESSIVE STRENGTHS OF FIVE CORE BUILD-UP MATERIALS

Journal Name:

  • Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

Publication Year:

  • 2007

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
The purpose of this laboratory investigation was to evaluate three mechanical properties; the compressive, diametral tensile and flexural strengths of five different core build-up materials. In this study, a light-actived Hybrid composite resin (President), resin modified glass ionomer (RMGIC) (Vitremer), amalgam (Cavex avalloy), glass-ionomer (GIC) (Logofil) and compomer (Dyract AP) restorative materials were used. 120 samples were prepared according to American Dental Association specification No. 27 for testing diametral tensile strength (DTS), compressive strength (CS) and flexural strength (FS). Forty specimens were prepared in cylindric molds (6 mm in height, 3 mm in diameter) for the CS measurements and forty specimens (3 mm in height, 6 mm in diameter) for diametral tensile strength (DTS). Forty specimens were prepared (25X 2 X 2 mm) for the FS measurements. All cores materials were prepared according to manufacturer's instruction at a temperature of 23.0 +/-1.0 degrees C. Haunsfeldpress and pull machine was used for compressive and flexural strength and the module were determined at a crosshead speed of 0.5 mm/mnn. Diametral testing was carried out at 1 mm/min. Analysis of variance was used for statistically evaluation. Mean compressive, diametral tensile and flexural strengths with associated standard deviations were calculated for each material. The results of this study indicated that the diametral tensile strength, flexural strength and compressive strength of the resin composite (President) and amalgam material were significantly higher than the other tested materials (p<0.001). On the other hand, the diametral tensile strength, flexural strength and compressive strength of glass ionomer based materials (Logofil, Vitremer) were statistically lower than for resin composites, compomer and amalgam.
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Abstract (Original Language): 
Bu çalışmanın amac, beş farklı kor materyalinin üç mekanik özelliği; çapsal germe drrenc, sıkıştrrma direnci ve bükülme direncini değerlendirmektir. Bu çalı şma için, ışıkla sertleşen hibrid kompozit rezin (President, Light cure Dynamic Universal hibrit Compoztt, München, Germany), reznn modffye cam yonomer (Vitremer, 3M Dental Products, St. Paul MN, USA), ama/gam (Cavex Avalloy Harlem, Hollanda), cam iyonomer (Logofil, D-Dental Atten, Atten Wade, Germany) ve compomer (Dyract AP) materyalleri kul/anıldı. Çapsal germe drrenc, sıkıştrrma direnci ve bükülme direnci testi için toplam 120 örnek American Dental Association 27 no/u spesffkasyonuna göre hazrrlandı. 6mm yüksekliğinde ve 3mm çapında 40 slrindrrkk örnek, çapsal germe direnci için ve 25X2X2 mm boyutlarında 40 örnek ise bükülme direnci testi için hazrrlandı. Tüm kor materyalleri üretici frrma önerileri doğruttusunda 23.0 +/- 1.0 0C'de hazrrlandı. Testler Hounsfield çekme-sıkıştırma makinesinde, bükülme ve sıkıştrrma geriiim testleri 0.5 mm/dak. ve çapsal geriiim testi için 1 mm/dak. baş/ık hızı ile yaplldı. İstatistiksel değerlendirme için varyans anaiizi kul/anıldı. Her bir materyal için Çapsal germe drrenc, sıkıştrrma direnci ve bükülme direncine ait ortalama ve standart sapma değerleri hesaplandı. Çalışmanın sonuçlarına göre Çapsal germe drrenc, sıkıştrrma direnci ve f/eksural gerl/im direnci açısından Kompozit resin (President) ve Ama/gam(Cavex aval/oy), diğer test edilen materyallere göre önemli derecede yüksek bulundu. (p<0.001). Diğer yandan cam iyonomer esas/ı materyallerin Çapsal germe drrenc, sıkıştrrma direnci ve bükülme direnci resin kompozit, kompomer ve ama/gama göre düşük bulundu.
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Atatürk Üniv. Diş Hek. Fak. Derg.
Cilt:17, Sayı: 1, Yıl: 2007, Sayfa: 18-23
BAYINDIR, YILMAZ
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