目的评价根管超声冲洗对根管预备术后反应及根充后侧支根管充填率的影响。
Ultrasonic irrigation and syringe irrigation were applied respectively in each group during the root canal preparation.
目的：比较手用不锈钢锉，镍钛合金机用锉和超声根管锉在根管预备后的临床效果。
Objective: To compare the clinical effects after root canal preparation with hand use stainless steel file, nickel titanium alloy engine file and root canal ultrasonic file.
目的：比较手用不锈钢锉，镍钛合金机用锉和超声根管锉在根管预备后的临床效果。
Objective: To compare the clinical effects after root canal preparation with hand use stainless steel file, nickel titanium alloy engine file and root canal ultrasonic file.
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