中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (8): 1211-1217.doi: 10.3969/j.issn.2095-4344.2014.08.011

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

水对3种双固化复合树脂冠核材料弯曲性能的影响

李亚南1,蔡  晴1,贾小龙1,邓旭亮2,杨小平1   

  1. 1北京化工大学材料科学与工程学院,有机/无机复合材料国家重点实验室,北京市  100029;2北京大学口腔医院,北京市  100081
  • 收稿日期:2013-12-16 出版日期:2014-02-19 发布日期:2014-02-19
  • 通讯作者: 杨小平,教授,北京化工大学材料科学与工程学院,北京市 100029
  • 作者简介:李亚南,女,1980年生,辽宁省大连市人,汉族,北京化工大学在读博士,主要从事复合材料的研究。
  • 基金资助:

    国家高技术研究发展计划(863计划主题项目)(2011AA030102);国家科技支撑计划项目(2012BAI07B01)资助

Effect of water storage on the flexural properties of three dual-cure core buildup composite resins

Li Ya-nan1, Cai Qing1, Jia Xiao-long1, Deng Xu-liang2, Yang Xiao-ping1   

  1. 1State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China; 2Peking University School and Hospital of Stomatology, Beijing 100081, China
  • Received:2013-12-16 Online:2014-02-19 Published:2014-02-19
  • Contact: Yang Xiao-ping, Professor, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
  • About author:Li Ya-nan, Studying for doctorate, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
  • Supported by:

    the National High-Technology Research and Development Program of China (863 Program), No. 2011AA030102; the National Key Technology Research and Development Program of China, No. 2012BAI07B01

摘要:

背景:口腔湿热环境会对牙科核材料的力学性能产生影响。
目的:观察水对3种双固化复合树脂冠核材料质量变化率及弯曲性能的影响。
方法:将LuxaCore Smartmix Dual、Para core和Clearfil DC Core 三种牌号双固化复合树脂材料制成      25 mm×2 mm×2 mm标准试件,于(37±1) ℃的蒸馏水中保存 0 d、1 d、1周、2周、3周和1个月后称质量,计算其质量变化率,并在万能试验机上测试三点弯曲性能。
结果与结论:3种复合树脂的质量变化率均随着浸泡时间的增加而增加;对于相同浸泡时间下,3种树脂的质量变化率由大到小排列次序为:LuxaCore Smartmix Dual>ParaCore>Clearfil DC Core。LuxaCore Smartmix Dual树脂强度随浸泡时间的增加而降低;ParaCore树脂强度在浸泡3周内变化不显著(P > 0.05),浸泡时间1个月时强度显著降低(P < 0.05);Clearfil DC Core树脂强度在整个浸泡过程中没有显著性差异(P > 0.05)。LuxaCore Smartmix Dual树脂模量在整个浸泡时间内呈现出下降趋势,但在最初2周的浸泡时间内无明显变化(P > 0.05),当浸泡时间达到3周和1个月时模量显著降低(P < 0.05);与浸泡前比,ParaCore和Clearfil DC Core两种复合树脂的模量值均下降,但这种变化不显著(P > 0.05);3种复合树脂的弯曲性能随着质量变化率的升高而呈现出波动式下降的趋势。综合显示在3种树脂中,Clearfil DC Core的耐水性最佳。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 口腔生物材料, 复合树脂, 水, 质量变化, 弯曲强度, 弯曲模量, 863项目

Abstract:

BACKGROUND: Hydrothermal condition of oral environment has an effect on the mechanical properties of dental core materials.
OBJECTIVE: To evaluate effect of water storage on the weight change rates and flexural properties of three dual-cure core buildup composite resins.
METHODS: Rectangular specimens (25 mm×2 mm×2 mm) were prepared from three dual-cure core buildup composite resins (LuxaCore Smartmix Dual, Para core and Clearfil DC Core). Specimens were stored in distilled water at 37 ℃ for 0, 1 day, 1, 2, 3 weeks and 1 month, respectively, weighted and then subjected to three-point bending test in a universal testing machine.
RESULTS AND CONCLUSION: Weight change rates of the three composite resins increased with immersion time; at the same immersion time, weight change rates of three composite resins ranked as the following order: LuxaCore Smartmix Dual > ParaCore > Clearfil DC Core. The flexural strength of LuxaCore Smartmix Dual decreased with immersion time. The flexural strength of ParaCore showed no significant change during 3 weeks immersion (P > 0.05), while it showed a significant decreasing after 1 month immersion (P < 0.05). There was no significant change on the flexural strength of Clearfil DC Core in the whole immersion process(P > 0.05). The flexural modulus of LuxaCore Smartmix Dual showed a decreased trend in the whole immersion process, but it showed that there was no significant change during the first 2 weeks(P > 0.05), while a significant decrease occurred after 3 weeks and 1 month (P < 0.05). Compared with original specimens, the flexural modulus of ParaCore and Clearfil DC Core showed a decreased trend, but this change was not significant (P > 0.05); the flexural properties of three composite resins showed a fluctuant decreased trend along with weight changes increased. To sum up, Clearfil DC Core showed the best water resistance among three composite resins.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: biocompatible materials, composite resins, water, biomechanics

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