中国实用口腔科杂志

中国实用口腔科杂志 ›› 2010, Vol. 3 ›› Issue (07): 416-418.

• 论著 • 上一篇    下一篇

添加NaClO消毒液的琼脂-藻酸盐联合印模抗菌性能和物理性能研究

  

  1. 南昌大学附属口腔医院修复科，南昌  330006
  • 收稿日期:2010-05-15 修回日期:2010-06-23 出版日期:2010-07-15 发布日期:2010-09-10

  • Received:2010-05-15 Revised:2010-06-23 Online:2010-07-15 Published:2010-09-10

摘要：

目的    探讨添加质量分数0.525% 的NaClO消毒液对琼脂-藻酸盐联合印模抗菌性能和物理性能的影响，为口腔抗菌印模材料的研制奠定实验基础。方法    本研究于2007年12月至2009年12月在南昌大学附属口腔医院进行。将质量分数0.525%的 NaClO消毒液加入到琼脂-藻酸盐联合印模材料中，采用玻板密闭法，测试添加消毒液后印模材料的抗菌活性，并参照相关标准对对结固时间，压应变等物理性能进行测试和评价。 结果    添加质量分数0.525%的NaClO消毒液的琼脂-藻酸盐联合印模材料，对金黄色葡萄球菌和大肠杆菌的抗菌率分别为99.83%和99.82%，对其本身的主要物理性能没有显著影响（P＞0.05）。结论    质量分数0.525%的NaClO消毒液可赋予琼脂-藻酸盐联合印模材料强抗菌性能，但对其主要物理性能没有显著影响，可满足临床应用要求。

关键词: NaClO, 琼脂-藻酸盐联合印模, 抗压强度, 形变恢复

Abstract:

Objective    To study the properties of the agar／alginate combination impression material impregnated with 0.525% NaClO，so as to provide theoretical and experimental basis for clinical application. Methods    NaClO was added into the agar／alginate combination impression material in the proportion of 0.525% .The antibacterial ratios were tested using a method according to the Chinese and Japanese standards for testing antibacterial efficacy of antibacterial materials. Bacteria strains used included Staphylococcus aures ATCC 6538 and Escherichia coli ATCC25922.The physical properties of the experimental self-disinfecting alginate impression material were also evaluated. Results    The antibacterial ratios of the agar／alginate combination impression material impregnated with antimicrobial agent against two tested bacteria strains were all beyond 99%. The impregnation of the antibacterial agent had no significant effect on the main physical properties of the alginate impression material （P > 0.05）.Conclusion    The impregnation of 0.525% NaClO can offer agar／alginate combination impression material with strong antibacterial activities against two tested bacteria strains. The compressive strength and dimensional accuracy of the experimental self-disinfecting agar／alginate combination impression material can meet the requirements of clinical application.

Key words: NaClO； agar／alginate combination impression material；compressive strength；dimensional , accuracy