Evaluation of frictional forces between ceramic brackets and archwires of different alloys compared with metal brackets
Evaluation of frictional forces between ceramic brackets and archwires of different alloys compared with metal brackets
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DOI：
10.1590/s1806-83242010000100007
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发表时间：
2010-03-01
影响因子：
2.5
通讯作者：
Vieira, Sérgio
中科院分区：
文献类型：
--
作者：
Guerrero, Ariana Pulido;Guariza Filho, Odilon;Vieira, Sérgio
本研究的目的是评估，在体外，陶瓷托槽和弓丝不同合金产生的摩擦力。对三种陶瓷托槽进行了性能测试：单晶（Aluminire ICE）、多晶（InVu）、带金属槽的多晶（Clarity）和一种不锈钢托槽（Dyna-Lock）。在人工唾液中，以0度和10度成角，对每个托槽的30个托槽进行测试，所有托槽都具有.022'槽，与不锈钢和镍钛丝.019' x.025 '组合。弓丝以10 mm/min的十字头速度穿过槽。研究的托槽组和弓丝组之间存在统计学显著差异（p <0.05）。带有金属槽的多晶托槽的值与传统多晶托槽的值相似，并且单晶托槽具有最高的摩擦力。镍钛丝产生的摩擦力最小。在多晶托槽中添加金属槽并没有显著降低摩擦值。镍钛丝产生的摩擦力低于不锈钢丝。
The aim of this study was to evaluate, in vitro, frictional forces produced by ceramic brackets and arch wires of different alloys. Frictional tests were performed on three ceramic brackets: monocrystalline (Inspire ICE), polycrystalline (InVu), polycrystalline with metal slot (Clarity), and one stainless steel bracket (Dyna-Lock). Thirty brackets of each were tested, all with .022' slots, in combination with stainless steel and nickel-titanium wires .019' x .025', at 0 degrees and 10 degrees angulation, in artificial saliva. Arch wires were pulled through the slots at a crosshead speed of 10 mm/min. There were statistically significant differences between the groups of brackets and wires studied (p < .05). The polycrystalline brackets with metal slots had values similar to those of conventional polycrystalline brackets, and the monocrystalline brackets had the highest frictional forces. The nickel-titanium wires produced the lowest friction. The addition of metal slots in the polycrystalline brackets did not significantly decrease frictional values. Nickel-titanium wires produced lower friction than those of stainless steel.