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Updated: Jan 31, 2026
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Force System with Vertical V-Bends: A 3D In Vitro Assessment of Elastic and Rigid Rectangular Archwires
Published on: July 24, 2018
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Study on Three-Dimensional Digital Expression and Robot Bending Method of Orthodontic Archwire
Jingang Jiang1,2, Xuefeng Ma1, Yongde Zhang1,2
1Robotics and its Engineering Research Center, Harbin University of Science and Technology, Harbin 150080, China.
Applied Bionics and Biomechanics
|January 11, 2019
Summary
Robotic archwire bending offers a precise solution for malocclusion treatment. This study demonstrates a feasible robot system using Bessel curves for accurate orthodontic archwire bending, improving clinical outcomes.
Area of Science:
- Biomedical Engineering
- Orthodontics
- Robotics
Background:
- Malocclusion is a prevalent global oral health issue, with fixed orthodontic techniques using archwires as the primary treatment.
- Manual archwire bending suffers from low efficiency and precision, necessitating advanced solutions.
Purpose of the Study:
- To develop and evaluate a robotic system for precise orthodontic archwire bending.
- To establish a three-dimensional digital expression and robot-assisted bending method for orthodontic archwires.
Main Methods:
- Utilizing Bessel curves for the three-dimensional digital expression of orthodontic archwire shape, position, and constraints.
- Implementing a robot bending method by transmitting the archwire curve into alternative lines.
- Developing specific planning methods for forming points and spatial angles.
Main Results:
- An experimental archwire bending system was tested using patient maxillary data.
- The achieved experimental values showed an error rate between 2.94% and 6.74% compared to ideal values.
- The results indicated that the robotic system meets basic physician requirements with minor modifications.
Conclusions:
- The proposed method using discrete Bessel curves for control point and angle planning is suitable for robotic archwire bending systems.
- The robotic archwire bending system demonstrates significant feasibility and practicality for clinical orthodontic treatment.
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