用三维空间标记法测量口腔印模材料的体积变化率

发布时间：2018-10-31 10:08

【摘要】：目的:使用三维标记法测定4种常用印模材体积变化率.方法:每种印模材在金属母模上制取3份试件后使用形状轮廓扫描仪扫描及建模,通过专用软件在试件模型上划出标记空间,并测量不同存放时间标记空间内体积,计算试件的体积变化率.结果:CAVEX藻酸盐在15、180 min时体积变化率分别为1.432%、8.343%;Zhermark藻酸盐在15、180 min时体积变化率分别为1.772%、7.580%;Express XT Penta H硅橡胶在1、36 h体积变化率分别为0.047%、0.364%;Impregum Penta聚醚橡胶在1、36 h体积变化率分别为0.012%、0.336%.2种藻酸盐体积变化率间无统计学差异(P0.05),2种人工合成橡胶体积变化率间的差值无统计学意义(P0.05),藻酸盐与人工合成橡胶体积变化率间差值具有统计学意义(P0.01).结论:藻酸盐类印模材体积变化率大于人工合成橡胶类印模材;三维空间标记法适用于印模试件形变的直接测量.
[Abstract]:Objective: to determine the volume change rate of four kinds of commonly used impression materials by three-dimensional labeling method. Methods: three samples were made on the metal master mold, then the shape contour scanner was used to scan and model the samples. The marking space was marked out by special software, and the volume of the marking space was measured at different storage times. Calculate the volume change rate of the specimen. Results: the volume change rates of CAVEX alginate at 15180 min were 1.432and 8.343, respectively. The volume change rates of CAVEX alginate at 15180 min were 1.772and 7.580, respectively. The volume change rates of Express XT Penta H silicone rubber at 1 ~ 36 h were 0.047 and 0.364, respectively. The volume change rates of Impregum Penta polyether rubber at 1 h were 0.012 and 0.336.2, respectively. There was no significant difference between the volume change rates of alginate (P0.05). The difference between the volume change rate of two synthetic rubber was not statistically significant (P0.05), the difference between alginate and synthetic rubber volume change rate was statistically significant (P0.01). Conclusion: the volume change rate of alginate impression is larger than that of synthetic rubber.
【作者单位】：暨南大学医学院口腔系;
【基金】：广东省自然科学基金项目(31912)
【分类号】：R783.1

【共引文献】