玷污层对新型三氧化矿物凝聚体根尖封闭性的影响
李爽1, 张清2,Δ

Effect of smear layer on apical sealing ability of mineral trioxide aggregate (MTA) Plus through the sucrose penetration mode
LI Shuang1, ZHANG Qing2,Δ
Smear-组倒预备窝洞壁扫描电子显微镜图(A,×1 000;B,×3 000)