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牙托粉的分子量及其分布对义齿基托性能的影响

The Molecular Weight and the Distribution of Molecular Weight of Denture Base Powder Exert an Influence on Mechanics Property of Denture Base

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【作者】 李志安肖群程汉亭刘丽樊帆王会丽何其坚

【Author】 Li zhian, Xiao qun, Cheng hanting, et al. StomatologicalHospital & College of Hubei Medical University, Wuhan 430079 ; Wang huili , He qijian , Wuhan Chemistry Industry Research Institute 430062.

【机构】 湖北医科大学口腔医学院武汉市化工研究所武汉市化工研究所 430070430070430062

【摘要】 目的 评价牙托粉分子量及其分布与义齿基托的挠曲强度和冲击强度的关系。方法 用凝胶色谱法测定三种自制牙托粉的分子量和分子量分布;用WD-10A型万能材料试验机和 XJ-4型非金属材料冲击试验机测试义齿基托的挠曲强度和冲击强度。结果 分子量最高的第一种材料挠曲强度最高;分子量较高、分子量分布最窄的第二种材料冲击强度最高;分子量最小的第三种材料其挠曲强度和冲击强度都最低。结论 牙托粉的分子量和分子量分布对义齿基托的挠曲强度和冲击强度有较大影响。

【Abstract】 Objective This study was to evaluate the influence that the molecular -weight and the distribution of molecular weight of denture base powder exert on flexure, strength and impact strength of denture base. Methods To use Gel Permeation Chiomatography to determine the molecular weight and the distribution of molecular weight of denture base powder; To use WD-10A all-powerful material test machine and XJ-4 nonmetal material impact instrument to measure flexure strength and impact strength of denture base. Results The molecular weight of the first material is the highest, its flexure strength is the highest; The molecular weight of the second material is higher and its distribution of molecular weight is the narrowest ,Its impact strength is the highest; The molecular weight of the third material is the smallest, It’s flexure strength and impact strength are low. Conclusion The molecular weight and the distribution of molecular weight of denture base powder obviously affect flexure strength and impact strength of denture base.

  • 【文献出处】 口腔材料器械杂志 ,Chinese Journal of Dental Materials and Devices , 编辑部邮箱 ,1999年04期
  • 【分类号】R783.6
  • 【被引频次】1
  • 【下载频次】81
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