Dentition Movement Track Indicator Using Intra-oral Fixation
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Solution Overview
Problem
Current methods for analyzing dentition movement are inaccurate due to the shielding of soft tissues and the complex dynamic nature of dentition movement, making it difficult to visually and accurately display the movement track during clinical examinations.
Innovation Solution
A dentition movement track indicator system comprising an intra-oral fixation assembly and an extra-oral movement indicating assembly, using a lower denture base, retention steel wires, and optical tracking technology to capture the movement track outside the mouth without bonding, ensuring accurate and comfortable tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a polished retainer is used for fixing a round wire, then the retainer can be easily manufactured, but the contact area is limited and the round wire is easy to fall off
Solution Approach 1:
The retainer is divided into multiple segments or sections, each with specific retention features. The retainer includes multiple retention arms or protrusions that contact different portions of the round wire, distributing the retention force across multiple contact points rather than a single limited area, thereby preventing the wire from falling off while maintaining manufacturing feasibility
Solution Approach 2:
The retainer is pre-adjusted and pre-positioned during the manufacturing process to ensure optimal contact with the round wire before actual use. This preliminary adjustment ensures that the retention features are properly aligned and configured, so that when the device is used, the wire is securely retained without requiring complex real-time adjustments
2Ease of operation
If a retainer covers the occlusal surface of the upper and lower dentition, then the retainer can be easily positioned, but the upper and lower dentition cannot be directly occluded and a vertical distance exists
Solution Approach 1:
The retainer is designed with different local properties: the occlusal surface coverage area provides positioning stability, while the lateral edges are designed to be minimal or transparent to allow direct occlusion of dentition. This localized differentiation allows the retainer to fulfill both positioning and accurate movement display functions simultaneously
Solution Approach 2:
The retainer covers only the necessary portion of the occlusal surface required for positioning, rather than completely covering all occlusal surfaces. This partial coverage approach provides sufficient positioning stability while leaving enough exposed occlusal surface area to maintain accurate dentition contact and movement representation
3Device complexity
If multiple static dentition images are used for analysis, then the analysis can be performed with simple equipment, but the continuous movement track of the dentition cannot be displayed
Solution Approach 1:
The retainer acts as an intermediary device that attaches to the dentition and extends outward to expose the movement track to external observation. This mediator translates the internal, hidden dentition movement into an externally visible form that can be captured by simple imaging equipment, thereby preserving movement track information without requiring complex analysis systems
4Object-affected harmful factors
If the soft tissues of the lips shield the dentition, then the natural oral structure is maintained, but the movement of the dentition is difficult to be clearly exposed to the physician's field of view
Solution Approach 1:
The retainer extends the observation of dentition movement from the internal three-dimensional space (shielded by lips) to an external two-dimensional plane that is visible to the physician. By projecting the movement track outward onto the retainer structure, the system converts an obscured spatial problem into a visible external representation
Data Source
AI summary
The invention provides a dentition movement track indicator and a tracing method. The device includes an intra-oral fixation assembly and an extra-oral movement indicating assembly, wherein the intra-oral fixation assembly includes a lower denture base, a left side retention steel wire, a right side retention steel wire and a positioning steel wire. The lower denture base is arranged on the lingual side of the lower dentition and respectively extends from a lower incisor to the far center of the last tooth on the left side and the right side and clings to the lingual mucous membrane. The left side retention steel wire and the right side retention steel wire are distributed in a left-right symmetry mode. The extra-oral movement indicating assembly includes a connecting rod, an arc rod, an indicating plate and a plurality of rectangular parallelepiped thin rods. According to the dentition movement track indicator, an intra-oral fixation assembly.