3D Archline Optimization Using a Patient-Specific Spee Curve
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing orthodontic technologies fail to accurately optimize the archline based on the Spee curve, which is crucial for achieving precise prosthetic treatment, as they lack methods to set the radius and center of the circle for the Spee curve in a three-dimensional space.
Innovation Solution
An archline optimization method that generates a Spee curve with a predetermined radius of curvature and optimizes the archline based on this curve by projecting it onto a predetermined plane and returning it to a three-dimensional space, using points derived from a three-dimensional model of the patient's teeth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a three-dimensional scanning method is used to acquire oral cavity data, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the necessary Spee curve information from the comprehensive three-dimensional oral cavity scan data. By projecting the archline onto a predetermined plane and generating a two-dimensional Spee curve, the system isolates the critical curvature information while discarding unnecessary three-dimensional facial model data, thus reducing processing complexity while maintaining measurement precision for archline optimization.
2Ease of operation
If the Spee curve is optimized using prior art methods, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent introduces a predetermined plane as an intermediary between the three-dimensional archline and the two-dimensional Spee curve. This intermediate representation allows users to easily modify the Spee curve in 2D space while automatically translating the changes back to the 3D archline configuration, thereby maintaining both ease of operation and manufacturing precision through the mediation of the projection plane.
3Adaptability or versatility
If a full three-dimensional facial model is generated, then adaptability is improved, but loss of energy increases
Solution Approach 1:
The patent extracts only the essential Spee curve information from the three-dimensional oral cavity scan, projecting the archline onto a predetermined plane to generate a two-dimensional representation. This extraction approach maintains adaptability for treatment planning by preserving the critical curvature data needed for archline optimization, while significantly reducing computational energy consumption by avoiding the generation and processing of complete three-dimensional facial models.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An archline optimization method according to the present disclosure includes generating a Spee curve based on an arc of a circle having a predetermined radius of curvature, and changing a three-dimensional archline based on the Spee curve.