Dye penetration showed that the length of dye staining was no significant difference among all groups.
每组随机选8颗牙扫描电子显微镜(SEM)观察;剩余8颗与对照组,采用冷牙胶侧方加压法根管充填后,进行染料渗透实验。
Apical microleakage were determined using dye penetration and clearing technique,and measured by stereomicroscope.
方法30颗离体单根管前牙随机分为国产根充糊剂、Vitapex糊剂和AHPlus糊剂3组,每组10颗,分别用加牙胶尖以冷侧压法充填根管,用染料渗透法和透明标本法在立体显微镜下测量根尖微渗漏。
Apical microleakage was determined using dye penetration and clearing technique,and measured by stereomicroscope.
方法离体双根管上颌前磨牙随机分为机用ProFile预备组和不锈钢K锉预备组,分别采用连续波热牙胶充填技术和冷侧压法进行根管充填,用染料渗透法和透明标本法测量根尖微渗漏,评价各组根尖封闭能力。