纯钛是银白色的金属，它具有许多优良性能。钛的密度为4.54g/cm3，比钢轻43%，比久负盛名的轻金属镁稍重一些。机械强度却与钢相差不多，比铝大两倍，比镁大五倍。钛耐高温，熔点1942K，比黄金高近1000K，比钢高近500K。
本实用新型属假肢体领域，具体涉及一种钛丝表面髋关节。
The utility model belongs to the field of an artificial limb, which particularly relates to an artificial hip joint with titanium wires surface.
钛丝；
目的：了解使用垂直曲的澳丝与镍钛丝在矫正上前牙严重舌倾的区别。
Objective: To observe the difference of two methods by using Australian wires with vertival loops and using Niti wires to treat upper anterior teeth with severely lingually tipping.
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