Method Using two different root canal filling materials for deciduous teeth.
方法用两种根管充填材料对乳前牙进行根管治疗。
To study the effect of root canal filling after confirm the canal working length by using traditional method and endometer method, and to evaluate their veracity, advantages and disadvantages.
研究传统法和根测仪法确定根管工作长度后行根管充填的效果，评价两者的准确性和优缺点。
Objective to explore an effective method for root canal filling and repairing perforation of pulp bottom.
目的寻求有效的充填根管及修复髓室底穿孔的材料。
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