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.
其操作方法简便，于牙根端外加磁场控制磁性液体向根管的尖端及其侧支根管流动。
The method of operation is simple and convenient, and in external magnetic field is added to the end of root canal, to make the fluid flow down to its pointed end the lateral canal.
结果：观察到的侧副管有5型：根管侧支、根尖分歧、根尖分叉、管间吻合和旁管。
Result: 5 types of accessory canals were observed, the incidence of each type in different root canal systems was assessed.
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