正畸弓丝, 有限元分析, 弯制特性, 弓丝弯制机器人

This paper analysed the bending properties of nickel steel wires,including domestic stainless steel wires,β-titanium alloy wires and Australia stainless steel wires. The finite analysis software MSC.Marc was used to model the process of orthodontic wires’ bending combined with actual experiments. Then the paper compared the results and analyzed the errors. The results indicate that rebound angle of the four kinds of orthodontic wires is reduced sequencely, furthermore, rebound angle increases as bending angles’ addition. The finite element analysis results are basically the same with the experimental ones. An orthodontic wires bending robot was used to bend wire based on orthodontic wires’ bending properties. The fitting curve obtained when the distance of the fixed fixture and mobile fixture is two millimeters is much better than the fitting curve obtained when the distance is ten millimeters. So the distance between the fixed fixture and mobile fixture should be as small as possible when using orthodontic wires to bend wires.

orthodontic wire, finite element analysis, bending property, orthodontic wire bending robot