国际口腔医学杂志 ›› 2022, Vol. 49 ›› Issue (1): 37-47.doi: 10.7518/gjkq.2022027
Ji Xiao1(),Jing Fangqi1,Li Ya2,Xue Jing1()
摘要: 目的 评价现有镍钛锉在根管预备中的使用效果,探讨根管预备中锉的最佳使用顺序。方法 使用Excel 2016,推导特定直径和锥度的锉表面积和体积计算公式。以根管体积和表面积增长率为主要指标,结合折线图和锥度坐标图进行数值模拟。结果 在纳入的现有26种根管锉产品中,vTaper推荐的预备顺序平均体积增长率最低。3+1(即1根通道锉与3根成形锉)、3+2(即2根通道锉与3根成形锉)、4+1(即1根通道锉与4根成形锉)以及4+2(即2根通道锉与4根成形锉)共4种模式对应的最佳根管锉使用顺序依次为2002—2003—2004—2504—3004、2002—1803—1804—2004—2504—3004、2002—1703—1704—2004—2504—3004;2002—1503—1703—1704—2004—2504—3004。结论 根据数据模拟,纳入的现有镍钛锉系统中,使用#20 K锉的vTaper系统的预备顺序最佳。通过推导得出的4种最佳顺序的根管体积和表面积增长率的平均值和方差明显小于大多数现有的系统,为后续实验提供基础,并有助于提高根管治疗的成功率,减少并发症。
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