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huo dong yi chi mo xing de san wei qu mo jing du bi jiao
Author(s): 
Pages: 134-135
Year: Issue:  1
Journal: CHINESE JOURNAL OF PRIMARY MEDICINE AND PHARMACY

Keyword:  牙科印模材料义齿三维精度;
Abstract: 目的 评价三种印模材料的取模精度.方法 分别用硅橡胶类、琼脂类和藻酸盐类(水粉调料型)三种印模材料制取10个同一实验主模具的人造石模型,用电子游标卡尺测量主模具和石膏模型上各标志点的距离.结果 硅橡胶类印模材料制取的石膏模型线性变化率最小且比主模型稍大,与琼脂类和藻酸盐类印模材料制取的印膜在三维尺寸变化率方面差异无统计学意义(P>0.05).结论 硅橡胶类印模材料的取模精度最高,琼脂类印模材料因取模精度高,操作比较简单,且价格易于接受等优点,值得在临床推广.
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