摘要
目的 评价HR 1型柔性牙龈赝复材料的老化性能。方法 测定由HR 1型柔性牙龈赝复材料制备的试样在浸入人工唾液 1年及 2年后试样的扯断强度和邵氏A硬度的变形情况。结果 37℃人工唾液老化 1年后 ,扯断强度均值下降 7% ,无显著差异 (P >0 .0 5 ) ;老化 2年后 ,扯断强度均值下降 12 % ,有显著差异 (0 .0 1<P <0 .0 5 )。材料的邵氏硬度在浸入 1年及 2年后变化不显著 (P >0 .0 5 )。结论 HR
Objective To evaluate the aging property of a new flexible gingival veneer material. Methods The tensile strength and Shore A hardness of samples made from HR 1 flexible gingival veneer material after being immersed in artificial saliva of 37℃ for 1 year and 2 years were tested. Results The tensilestrength on average decreased by 7% after samples being immersed for 1 year, but there was no statistical significant difference ( P >0.05).After being immersed for 2 years, the average tensile strength decreased by 12%, showing significant difference(0.01< P <0.05).The Shore A hardness of all samples after being immersed in artificial saliva for 1 year and 2 years showed no significant difference( P >0.05).Conclusion The new flexible gingival veneer material showed a good ageing resistant property.
出处
《口腔材料器械杂志》
2002年第4期173-174,共2页
Chinese Journal of Dental Materials and Devices
基金
军队卫生科研基金资助项目 (编号 113 5 68)
