目的研究两种临床常用的根管预备器械不锈钢锉和镍钛锉预备根管对充填后根管根尖孔封闭性的影响。
Objective To evaluate the apical sealing ability of obturated root canals prepared hand ProTaper with stainless steel K files in simulated resin root canals.
用细锉将两个孔锉成镶入衬套的六边形。
File off both bores to the hexagon of the insertion bushing using a needle-point file.
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