Lehmann K M, Lindemann J
Dtsch Zahnarztl Z. 1980 May;35(5):537-9.
After casting one model with various procedures and materials, models were constructed of Duroc. the abutment distance of the Duroc model depended on the impression method and the impression material. In general, double-mix impressions were more accurate than corrective impressions. Corrective impressions could be improved by placing flow-off grooves in the primary impression.
用各种程序和材料制作一个模型后，制作了杜洛克猪的模型。杜洛克猪模型的基台距离取决于印模方法和印模材料。一般来说，双重混合印模比校正印模更准确。通过在初次印模中设置引流沟可以改善校正印模。
