A comparison of LightSpeed LS1 and LightSpeed LSX NiTi rotary instruments in apical transportation and length control in simulated root canals.
A comparison of LightSpeed LS1 and LightSpeed LSX NiTi rotary instruments in apical transportation and length control in simulated root canals.
复制标题
LightSpeed LS1 和 LightSpeed LSX NiTi 旋转器械在模拟根管中的根尖运输和长度控制方面的比较。
DOI：
10.1016/j.joen.2006.10.013
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发表时间：
2007
影响因子：
4.2
通讯作者：
B. Bachstein
中科院分区：
文献类型：
--
作者：
M. Iqbal;B. Banfield;Amanda Lavorini;B. Bachstein
在一项重大设计变更中，LightSpeed Technologies Inc. 在 LightSpeed LSX 根管旋转器械中将 U 形刀片设计替换为铲形设计。使用双数字射线照相技术来比较两种仪器设计之间的心尖运输（AT）和长度控制（LC）。每个旋转系统安装了三十个模拟塑料根管。使用数字射线照相和 AutoCAD 2007 确定 ISO 尺寸为 20、35、50 和 70 的文件的中心轴。通过将中心轴与尺寸为 20 的基线叠加，在距离工作长度 (WL) 0、1 和 3 mm 处测量 AT 程度。从锉尖到设定 WL 的距离表明有任何 LC 损失。方差分析测试显示组间 AT 或 LC 程度没有显着差异。没有注意到仪器分离。结果表明，新设计的 Lightspeed LSX 仪器在 AT 和 LC 方面保持与 LightSpeed LS1 仪器相同的有效性。
In a major design change LightSpeed Technologies Inc. has replaced the U-shape blade design with a spade-shape design in LightSpeed LSX root canal rotary instruments. A double-digital radiographic technique was used to compare apical transportation (AT) and length control (LC) between the two instrument designs. Thirty simulated plastic root canals were instrumented by each rotary system. Digital radiography and AutoCAD 2007 were used to determine the central axes of files at 20, 35, 50, and 70 ISO sizes. By superimposition of central axes with a baseline at size 20, the degree of AT was measured at 0, 1, and 3 mm from working length (WL). The distance from file tips to set WL indicated any loss of LC. ANOVA test showed no significant differences between groups with respect to the degree of AT or LC. No instrument separation was noted. The results indicate that newly designed Lightspeed LSX instruments maintain the same effectiveness regarding AT and LC as that of the LightSpeed LS1 instruments.