Continuous arch wire technique using the bending art system

Area of Science:

• Orthodontics
• Biomedical Engineering
• Dental Technology

Background:

• The multiband technique in orthodontics traditionally relies on manual arch wire bending.
• Computerized systems offer potential for increased precision and customization in orthodontic treatment planning.

Purpose of the Study:

• To describe the Bending Arch System (BAS) for computerized production of individual arch wires.
• To detail the treatment planning process within the BAS, including the direct and indirect methods for arch wire design.

Main Methods:

• The BAS utilizes intraoral camera images for treatment planning.
• Planning involves defining an ideal arch, a target arch (final treatment outcome), and the treatment sequence.
• Two methods for calculating intermediate arch geometries are compared: the direct method (shortest tooth movement) and a newly developed indirect method using a cast model.

Main Results:

• The BAS facilitates the computerized design of patient-specific arch wires.
• The indirect method, using a cast model and ideal occlusion setup, is presented as a novel approach for target arch production.
• The system deviates from the straight-wire technique by not finalizing treatment with a straight arch wire, acknowledging individual occlusal variations.

Conclusions:

• The Bending Arch System provides a digital workflow for individualized arch wire fabrication in multiband orthodontics.
• The indirect method offers an alternative approach to treatment planning by utilizing a physical model for target arch definition.
• BAS acknowledges and accommodates patient-specific occlusal characteristics, moving beyond the limitations of the straight-wire norm.