患者,男性,72歲,缺失,余牙正常。設(shè)計(jì)RPI卡環(huán),用鈷鉻合金鑄造腭板連接
A.0.2mm B.0.4mm C.0.5mm D.0.7mm E.0.9mm
A.≤0.5mm B.>0.5mm C.≤0.7mm D.>0.7mm E.0.8~1.0mm
A.≥0.5mm B.≥0.7mm C.≥0.9mm D.≥1.1mm E.≥1.3mm