4种义齿基托树脂力学性能比较  

A comparative studiy on the mechanical properties of four kinds of denture resin

作　　者：赵信义[1] 施长溪[1] 陈萍[1] 

机构地区：[1]第四军医大学口腔医学院口腔材料教研室,西安710032

出　　处：《实用口腔医学杂志》2003年第6期550-553,共4页Journal of Practical Stomatology

摘　　要：目的 :比较 4种义齿基托树脂的力学性能 ,为临床选择材料提供指导。方法 :按临床制作义齿的步骤制备试样 ,在材料试验机上测定材料的冲击强度、弯曲强度、弹性模量和布氏硬度 ,描绘弯曲试验的应力 应变曲线 ,并对断面进行显微分析。结果 :4种义齿基托树脂 (上海珊瑚、山西长治、Luciton199、Meliodent)的冲击强度分别为 (9.94± 2 .2 5)kJ/m2 、(6.55± 1.85)kJ/m2 、(13 .76± 4.3 1)kJ/m2 、(13 .70± 3 .71)kJ/m2 ,弯曲强度分别为 (75.2 7± 3 .2 4)MPa、(78.88± 7.66)MPa、(80 .47± 3 .2 7)MPa、(76.72± 3 .14 )MPa ,弹性模量分别为 (3 .0 8± 0 .15)GPa、(2 .96± 0 .10 )GPa、(2 .63± 0 .11)GPa、(2 .56± 0 .12 )GPa ,布氏硬度分别为(2 4.15± 1.3 4 )kg/mm2 、(2 3 .43± 1.65)kg/mm2 、(2 0 .86± 1.2 6)kg/mm2 、(18.49± 1.71)kg/mm2 。结论 :4种基托树脂材料相比 ,”上海珊瑚”和”山西长治”基托树脂硬而脆 ,Luciton 199基托树脂硬而强 。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.

关 键 词：义齿基托 树脂 力学性能 冲击强度 弯曲强度 布氏硬度 

分 类 号：R783.6[医药卫生—口腔医学]