Custom Segmented Indirect Bonding Trays for Tooth Movement
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Solution Overview
Problem
Conventional indirect bonding (IDB) trays fail to accurately fit patient's teeth due to anatomical changes between scanning and bonding, leading to bond failures and extended treatment times, particularly in cases of tooth movement, arch width variations, and bracket misalignment.
Innovation Solution
Customized segmentation of IDB trays based on patient-specific anatomical data and bracket placement using a set of optimization rules, optimized through additive manufacturing, to enhance fit and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional indirect bonding trays are used, then the bonding process can be performed, but the trays fail to accurately fit patient's teeth due to anatomical changes between scanning and bonding
Solution Approach 1:
The patent divides the conventional single indirect bonding tray into multiple segmented trays, each customized to fit specific regions of the patient's dentition. This segmentation allows each tray portion to independently accommodate anatomical variations and tooth movements, thereby improving overall fit accuracy and bonding reliability despite changes between scanning and bonding procedures.
Solution Approach 2:
The patent applies local quality by customizing each segment of the indirect bonding tray according to specific local anatomical characteristics of the patient's teeth and arch. Each tray segment is designed with locally optimized geometry to match the specific region it serves, accounting for variations in tooth position, arch width, and other anatomical features that differ across different areas of the mouth.
2Adaptability or versatility
If anatomical changes occur between scanning and bonding, then treatment flexibility is maintained, but bracket misalignment and bond failures occur
Solution Approach 1:
The patent performs preliminary actions by creating customized segmented tray designs based on initial scans before the actual bonding procedure. The segmentation and customization are prepared in advance to anticipate and accommodate expected anatomical changes, allowing the trays to be pre-fitted to the patient's specific anatomy while maintaining the ability to adapt to variations that occur during treatment.
Solution Approach 2:
The patent introduces dynamics by designing segmented trays that can independently adapt to dynamic changes in the patient's anatomy. Each segment can move or flex independently to accommodate tooth movements and anatomical variations, transforming the rigid conventional tray into a more dynamic system that responds to changes between scanning and bonding.
3Manufacturing precision
If custom segmented trays are designed and manufactured, then transfer accuracy is optimized, but device complexity and manufacturing process complexity increase
Solution Approach 1:
The patent applies universality by creating a standardized methodology and system for generating custom segmented trays that can be applied across multiple patients and cases. The segmentation approach and manufacturing process, while complex for individual customization, follow universal principles and protocols that make the complexity manageable and reproducible through digital workflows and additive manufacturing technologies.
Data Source
AI summary
Some embodiments relate to techniques of designing indirect bonding (IDB) trays that compensate for factors that affect the bonding success of orthodontic appliance(s) using IDB trays. The techniques apply optimization rules to an IDB tray design to optimize the transfer accuracy of orthodontic appliance(s) to a patient's teeth using IDB tray(s) of the IDB tray design. For example, the techniques may compensate for movement of teeth relative to an initial scan, narrow/wide central arches, teeth planned for extraction, and/or other factors. The techniques may, for example, customize segmentation of IDB trays in an IDB tray design to compensate for factors that affect bonding success.