Self-Ligating Bracket Rotary Cover Archwire Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current orthodontic brackets require ligatures or ligating modules for archwire retention, which are time-consuming to install, prone to hygiene issues, and can become detached, limiting force application and increasing friction during tooth movement.
Innovation Solution
A self-ligating orthodontic bracket with a rotary ligating cover that rotates about a retaining pin, using resilient retention features to securely hold the archwire within the archwire slot without the need for traditional ligatures, allowing for easier adjustment and reduced friction during orthodontic treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional ligatures or ligating modules are used to hold the archwire, then archwire retention is achieved, but installation time increases and hygiene deteriorates
Solution Approach 1:
The patent removes the traditional ligature or ligating module from the system and replaces it with a self-ligating mechanism integrated into the bracket. The bracket body includes a ligating element that automatically engages with the archwire, eliminating the need for separate ligatures and their associated installation steps.
Solution Approach 2:
The patent combines the functions of the bracket and the ligating mechanism into a single integrated unit. The bracket body incorporates the ligating element, merging what were previously separate components (bracket + ligature) into one unified structure that provides both attachment and archwire retention functions.
2Reliability
If traditional ligatures or ligating modules are used to hold the archwire, then archwire retention is achieved, but hygiene deteriorates due to trapped food particles
Solution Approach 1:
By removing the traditional ligature from the system and replacing it with an integrated self-ligating mechanism, the patent eliminates the donut-shaped elastomeric rings or wires that create crevices and surfaces where food particles can accumulate and trap bacteria.
Solution Approach 2:
The patent designs the ligating element with specific local characteristics - using smooth, continuous surfaces that minimize areas where food particles can be trapped. The ligating element's geometry is optimized to provide retention while maintaining hygiene through its surface properties and configuration.
3Reliability
If traditional ligatures or ligating modules are used, then archwire retention is achieved, but the archwire may become detached and force application is limited
Solution Approach 1:
The patent employs a dynamic ligating element that can actively engage and disengage from the archwire. The ligating element includes movable components that allow for controlled interaction with the archwire, enabling secure retention during treatment while allowing for easy adjustment and removal when needed.
Solution Approach 2:
The self-ligating mechanism automatically engages with the archwire without requiring manual manipulation of separate ligatures. The bracket's integrated ligating element performs the retention function autonomously, providing reliable archwire holding while allowing the orthodontist to apply forces through the archwire-bracket system without being constrained by ligature limitations.
4Productivity
If self-ligating design is used, then installation time is reduced and hygiene is improved, but archwire retention mechanism becomes more complex
Solution Approach 1:
While the integrated design does increase structural complexity, the patent achieves this by merging functions rather than adding separate components. The single bracket unit incorporates both the bracket body and ligating element, which simplifies the overall system by eliminating the need for separate ligatures and their installation steps.
Solution Approach 2:
The bracket is divided into functional segments - the bracket body for tooth attachment and the ligating element for archwire retention. This segmentation allows each component to be optimized for its specific function while working together as an integrated unit, balancing complexity with functional efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The self-ligating design enhances archwire retention, reduces installation time, improves hygiene, and allows for more controlled force application, minimizing unnecessary stress on the periodontium and musculature during tooth movement.
Implementation Method 1
The bracket base includes resilient retention features for holding the archwire within the archwire slot
Data Source
AI summary
The present invention provides designs for a self-ligating orthodontic bracket. According to one embodiment, the self-ligating orthodontic bracket includes a mounting base for attachment to a tooth surface, an archwire slot formed upon the base and sized for receiving an orthodontic archwire, a rotary ligating cover selectively rotatable between an open position permitting access to the archwire slot and a closed position covering the archwire slot, and one or more locking features for holding the rotary cover in a closed position. In one embodiment, the bracket includes one or more locking tabs on the rotary cover aligned in coplanar relation to the rotary cover and cooperatively mating with cutout portions in the base. The bracket may include cutouts on the sides of the rotary cover for easier manipulation of the cover. Lead in chamfers on the archwire slot may also be incorporated into the bracket base. Recessed channels and detents may be included for allowing the cover to be held in open or closed positions.