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Stress/strain behavior of some dental luting cements

 

作者: ØiloGudbrand,   EspevikSvein,  

 

期刊: Acta Odontologica Scandinavica  (Taylor Available online 1978)
卷期: Volume 36, issue 1  

页码: 45-49

 

ISSN:0001-6357

 

年代: 1978

 

DOI:10.3109/00016357809026366

 

出版商: Taylor&Francis

 

关键词: Dental materials;mechanical properties

 

数据来源: Taylor

 

摘要:

Baa, G.&Espevik, S. Stress/strain behavior of some dental luting cements.Acta Odont. Scand. 36, 45–49The compressive strength, modulus of elasticity and the plastic strain at fracture have been studied for several dental luting cements. Stress/strain diagrams of cylindrical specimens using two different crosshead speeds (2 mm/min and 0. 1 mm/min) at 23°and 37°C showed that large differences existed between various luting cements.A zinc phosphate cement exhibited high strength, high modulus of elasticity and a small plastic strain at fracture. A resin cement also had high strength, but elastic and plastic strains were high. A polycarboxylate and an EBA-cement both showed low values of strength and modulus of elasticity combined with a high degree of plastic deformation at fracture. Testing with low strain rate at 37°C accentuated the differences between these two materials and the zinc phosphate cement.

 

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