试尖对根管充填质量影响的研究

目的：了解试尖对侧向加压法根管充填质量的影响因素。方法：随机提取我院1998年10月至2004年12月所完成的根管充填病例的X线片1000例，按试尖与未试尖，分别对前牙、前磨牙和磨牙根管充填质量进行分析。结果：在482例未试尖根管充填病例中，前牙、前磨牙和磨牙的适充比例分别为46％、37％和23％，欠充为20％、29％和47％。超充为34％、33％和29％：在518例试尖病例中，前牙、前磨牙和磨牙的适充比例分别为68％、62％和51％，欠充为6％、12％和13％，超充为25％、24％和36％。结论：在侧向加压法根管充填中，试尖可明显改善充填质量。

THE INFLUENCE OF THE TRIAL POINT ON THE QUALITY OF ROOT CANAL OBTURATION

Objective:To observe the influence factors of the trial point on the quality of root canal obturation.Method:1 000 cases of root canal therapy with lateral compaction during Oct.1998 to Dec.2004 were obtained randomly.The quality of obturation was analyzed with or without testing the trial point.Results: There were 518 teeth with the trial point and 482 cases without. The rates of flush filled teeth were 68%,62% and 51% with the trial point against 46%,37% and 23% without the test in anterior,premolars and molars,respectively.The rates of underfilled teeth were reduced from 20%,29% and 47% with the trial point to 6%,12% and 13% without the test in anterior,premolars and molars respectively.Conclusions:The trial point test may improve the quality of obturation with lateral compaction.