›› 2018, Vol. 38 ›› Issue (4): 310-313.

• 基础研究 • 上一篇    下一篇

不同液体浸泡对硅橡胶软衬拉伸强度的影响

郭欣1,王柳力2,廖国婷3,魏天骄4,冯剑桥2   

  1. 1. 哈尔滨医科大学附属口腔医院
    2. 哈尔滨医科大学附属口腔医学院
    3. 哈尔滨医大一院口腔医院
    4. 哈尔滨医科大学附属口腔医院口腔修复科
  • 收稿日期:2017-07-10 修回日期:2017-09-03 出版日期:2018-04-28 发布日期:2018-05-03
  • 通讯作者: 冯剑桥 E-mail:34013325@qq.com

Effect of Different Liquid Immersion on Tensile Strength of Silicone Rubber Soft Lining

  • Received:2017-07-10 Revised:2017-09-03 Online:2018-04-28 Published:2018-05-03

摘要: [摘要] 目的 研究不同液体浸泡对硅橡胶类软衬材料拉伸强度的影响。方法 采用Vertex热凝树脂基托材料分别与MolloplstB热凝硅橡胶软衬材料(A组)和Up&Up自凝硅橡胶软衬材料(B组)粘接制作实验试件各54个,随机分成9组(编号1~9)每组6个试件,1组作为实验对照组,不进行任何处理;2~5组在37 ℃恒温人工唾液中分别浸泡1、7、30、90 d,6~9组常温条件下在义齿清洁剂中分别浸泡1、7、30、90 d。所有试件进行拉伸强度测定并观察断裂面。结果 浸泡在人工唾液中的MolloplstB热凝试件和Up&Up自凝试件的拉伸强度之间均无显著差异(P>0.05);浸泡在义齿清洁剂中90 d的Up&Up自凝试件的拉伸强度降低,相比实验对照组、1d、7d和30d,差异有统计学意义(P<0.05);热凝硅橡胶软衬材料的强度高于自凝硅橡胶软衬材料(P<0.01)。结论 人工唾液浸泡对硅橡胶软衬材料的强度无明显影响;义齿清洁剂浸泡90d使Up&Up自凝硅橡胶软衬的拉伸强度有所降低;热凝硅橡胶软衬材料的拉伸强度高于自凝硅橡胶软衬材料。

关键词: [关键词] 硅橡胶, 软衬材料, 拉伸强度

Abstract: Abstract: Objective  To study the effects of different liquid immersion on the tensile strength of silicone rubber soft lining materials. Methods  A total of 54 experimental specimens were prepared by bonding Vertex thermosetting resin base material with Molloplst B thermal silicone rubber soft lining material (group A) and Up & Up self-setting silicone rubber soft lining material (group B) respectively. A1-9, B1-9 were used in each group with 6 specimens, A1B1 group as experimental control group, no treatment; A2-5 and B2-5 were soaked in 37 ℃ constant temperature artificial saliva for 1d, 7d, 30d and 90d, A6-9 and B6-9 were immersed in denture cleaner at room temperature for 1 day, 7 days, 30 days and 90 days, respectively. The tensile strength of all specimens was tested and the fracture surface was observed. Results  There was no significant change in the tensile strength of the tested samples in artificial saliva soaking group (P> 0.05). The tensile strength of Up & Up self-setting specimen immersed in denture cleaner decreased at 90 days, and compared with the experimental group, the difference was statistically significant (p <0.05). The strength of the thermosetting silicone rubber soft lining material was higher than that of the self-coagulated silicone rubber soft lining material (P <0.01) Conclusions Artificial tacil soaking has no significant effect on the strength of silicone rubber soft lining material. Denture cleaner soaking 90d makes Up & Up self-shearing silicone rubber soft lining tensile strength reduced. The tensile strength of thermosetting silicone rubber soft lining material is higher than silicone rubber soft lining material.

Key words: Key words: silicone rubber, soft lining, tensile strength

中图分类号: