Analysis of tooth movement in typodont using three-dimensional reverse engineering technology

Area of Science:

• Biomedical Engineering
• Orthodontics
• Dental Technology

Background:

• Accurate measurement of tooth movement is crucial for effective orthodontic treatment planning.
• Current methods may not precisely capture the 3D spatial displacement of teeth.

Purpose of the Study:

• To determine the precise 3D space movement distance of teeth during orthodontic treatment.
• To develop a reliable method for quantifying tooth displacement for clinical appliance selection.

Main Methods:

• Utilized 3D scanning equipment to capture point cloud data of dental models at various treatment stages.
• Developed a novel algorithm integrating Iterative Closest Point (ICP) matching and color difference maps (CDM) for 3D distance calculation.
• Compared the new algorithm with a traditional mean measurement method.

Main Results:

• Successfully obtained the 3D space distance value of tooth models, enabling calculation of dental forces.
• Demonstrated the feasibility and accuracy of the proposed algorithm in measuring tooth movement.
• Identified tooth movement patterns in the occlusal plane.

Conclusions:

• The developed algorithm provides an accurate method for measuring 3D tooth movement distance in orthodontics.
• This technology can significantly contribute to informed clinical appliance selection and treatment optimization.
• The findings support the clinical application of advanced 3D measurement techniques in dentistry.