结果不同印模材料采印及灌注的普通石膏模型，人造石和超硬石膏模型，其表面光滑度及硬度均有所差异。
Results There had difference on the surface smoothness and hardness of models made with different impression materials and different model materials.
目的本研究是将石膏代型间隙印模和预备体间隙印模扫描后，通过计算分析，测试并比较两种情况的适合度。
PurposeThis study is the gypsum generation of gap stamp and the preparation body gap stamp scanning, through the computation analysis, tests and compares two kind of situations the grades of fit.
用海藻胶代替橡胶、石膏作牙科印模料，不仅价格便宜，操作简便，而且印出的齿形更准确。
It not only has reasonable price and convenient operation, but also can print exact teeth form with sodium alginate replacing the dentistry moulage material of rubber and gesso.
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