Quantification of three-dimensional orthodontic force systems of T-loop archwires
Quantification of three-dimensional orthodontic force systems of T-loop archwires
复制标题
DOI：
10.2319/082509-484.1
复制
发表时间：
2010-07-01
影响因子：
3.4
通讯作者：
Brizendine, Edward J.
中科院分区：
文献类型：
--
作者：
Chen, Jie;Isikbay, Serkis C.;Brizendine, Edward J.
目的：使用新方法展示三种商用闭合 T 形环弓丝的三维 (3D) 正畸力系统，并量化 T 形环弓丝的力系统。 材料和方法：开发了正畸力测试仪 (OFT) 和定制齿模来测量力系统。该系统模拟了需要空间闭合的正畸患者的临床环境，其中包括测量沿着两个目标牙齿上三个临床定义的轴的三个力分量和围绕两个目标牙齿的三个力矩分量。弓丝连接到牙模上，并按照标准临床程序激活。使用 OFT 测量所得的力系统。结果：牙齿上 T 形环的力系统是 3D 的。一个方向的激活会导致其他方向的力和力矩分量（副作用）。对临床定义的坐标系中的六个力和力矩分量以及力矩与力之比进行了量化。结论：商业弓丝不提供用于纯平移的力系统。力系统的量化对于最佳正畸矫治器的选择和设计至关重要。 （角度正交。2010；80：754-758。）
Objective: To demonstrate the three-dimensional (3D) orthodontic force systems of three commercial closing T-loop archwires using a new method and to quantify the force systems of the T-loop archwires.Materials and Methods: An orthodontic force tester (OFT) and a custom-made dentoform were developed to measure force systems. The system simulated the clinical environment for an orthodontic patient requiring space closure, which included measurement of three force components along, and three moment components about, three clinically defined axes on two target teeth. The archwires were attached to the dentoform and were activated following a standard clinical procedure. The resulting force system was measured using the OFT.Results: The force systems of the T-loops on the teeth were 3D. Activation in one direction resulted in force and moment components in other directions (side effects). The six force and moment components as well as the moment-to-force ratios in the clinically defined coordinate system were quantified.Conclusions: The commercial archwires do not provide force systems for pure translation. Quantification of the force system is critical for the selection and design of optimal orthodontic appliances. (Angle Orthod. 2010;80:754-758.)