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《Journal of Practical Stomatology》 2003-06
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A comparative studiy on the mechanical properties of four kinds of denture resin

Zhao Xinyi, Shi Changxi, Chen Ping. Department of Dental Materials, College of S tomatology, Fourth Military Medical University, Xi’an 710 032  
Objective: To comparative the mechanical properties of f our kinds of denture resin. Method: The impact strength, f lexural strength, flexural elastic modulus and Brinell hardness of four denture resin materials, Shanghai Shanhu(SH),Shanxi Changzhi(CZ), Luciton 199(LC) and Me liodent(MD), were measured in vitro and the stress-strain curve of each ma terial under flexural force was drawn. Results: The impact strength(kJ/m 2) of SH,CZ,LC and MD were 9.94±2.25,6.55±1.85,13.76±4.31 and 13.70±3.71; flexural strength (MPa) 75.27±3.24,78.88±7.66,80.47±3.27 and 7 6.72±3.14; flexural elastic modulus(GPa) 3.08± 0.15 ,2.96±0.10,2.63±0.11 a nd 2.56±0.12; Brinell hardness(kg/mm 2)24.15±1.34, 23.43 ± 1.65 ,20.86± 1.26 and 18.49±1.71,respectively. Conclusions: Comparativ ely speaking, SH and CZ are rigidit and brittle, LC is rigidit and sturdy, MD is tough and sturdy.
【CateGory Index】: R783.6
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