INFLUENCE OF THE LIGATURE ON THE FRICTION BETWEEN BRACKET AND ARCH WIRE
INFLUENCE OF THE LIGATURE ON THE FRICTION BETWEEN BRACKET AND ARCH WIRE
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DOI：
10.1007/bf02164848
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发表时间：
1990-01-01
期刊：
影响因子：
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通讯作者：
DRESCHER D
中科院分区：
文献类型：
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作者：
SCHUMACHER H A;BOURAUEL C;DRESCHER D
本研究采用五种不同的弓丝材料和六种结扎线的组合，通过测试装置分析弓丝与结扎线之间的摩擦力对正畸力的影响。托槽与弓丝成零度角固定。我们的测量结果可以总结如下：1.摩擦力主要取决于结扎的种类和结扎的方式，而不是不同弓丝的尺寸。2.由橡皮筋引起的摩擦力明显小于由钢丝结扎引起的摩擦力。这一点在使用标准钢丝时尤其明显。3.如果使用多股线，摩擦力非常低。即使是0.016倍。0.022 Force 9导丝显示摩擦力很小。4.如果钢结扎线与标准钢丝（0.016和0.016 × 0.016）结合，则矫正力甚至可以被中和。0.022）。5.这导致了一种建议，即钢结扎线应该被重新扭曲约90至180 °。如果要实现正畸牙齿平移，则在托架旁边。6.使用Unitek Quicksticks可使弹性材料下方的摩擦力最小。
The combinations of five different wire materials and six ligatures were analysed with the help of a testing apparatus in order to determine the loss in orthodontic force caused by friction between arch wire and ligature. The bracket was fixed at an angulation of zero degrees with respect to the arch wire. The results of our measurements can be summarized as follows: 1. Friction is determined mostly by the sort of ligature and by the way of ligation and not by the dimensions of the different arch wires. 2. Friction caused by alastics is significantly less than friction caused by steel-ligatures. This can be observed especially is standard-steel wires are used. 3. Frictional forces are astonishingly low if multistranded wires are used. Even the 0.016 .times. 0.022 Force 9 wire shows little friction. 4. Orthodontic force may even be neutralized if a steel ligature is combined with standard steel wires (0.016 and 0.016 .times. 0.022). 5. This leads to the proposal that a steel ligature should be retwisted for about 90 to 180.degree. next to the bracket, if orthodontic tooth translation is to be achieved. 6. Using the Unitek Quicksticks causes least friction beneath the alastics.