【摘要】 目的　了解试尖对侧向加压法根管充填质量影响的程度。方法　 40 0颗患牙随机分为二组 :实验组在根管治疗前采用试尖步骤 ,对照组不采用试尖 ,直接加压充填。然后分别对前牙、前磨牙和磨牙根管充填的质量进行分析。结果　 199颗未试尖根管充填患牙中 ,前牙、前磨牙和磨牙的适充比例分别是 62 %、49%和 2 6% ,在 2 0 1颗试尖患牙中 ,前牙、前磨牙和磨牙的适充比例分别为 86%、75 %和 5 2 %。此结果经卡方检验 ,具有统计学意义 (P <0 .0 1)。结论　在侧向加压法根管充填中 ,试尖可以明显地提高根管充填的质量更多还原

【Abstract】 Objective To observe the influence of the trial point on the quality of root canal obturation.Methods 400 teeth were randomly divided into two groups. The experimental group was with the trial point,while the control group without. The quality of obturation was analyzed based on with and without testing the trial point.Results There were 201 teeth with the trial point and 199 teeth without, the rates of flush filled teeth were 86%,75% and 51% respectively in the trial point against,but its rates were 62%,49% and 26% respectively without the test in anterior, premolars and molars. The standard data of two groups were evaluated and compared. The difference of two groups was statistically significant(P<0 05).Conclusions The trial point test may improve the quality of obturation with lateral compaction.更多还原