Shape Memory Dental Wedge for Interproximal Tooth Separation
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Solution Overview
Problem
Direct dental restorations face challenges in efficiently separating adjacent teeth and securing a dental matrix due to the small, non-uniform interproximal space, making it cumbersome for dental professionals to quickly and accurately restore teeth.
Innovation Solution
A dental wedge made of a nickel-titanium alloy with a shape memory material that transforms from a resting state to an operational state, exerting an expansion force to separate teeth and secure a dental matrix, featuring an inverted V-shaped cross-section and wings for secure placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple devices are used to separate teeth and secure matrix in the interproximal space, then the separation and securing functions are achieved, but the device complexity increases and makes the procedure more cumbersome
Solution Approach 1:
The patent combines multiple functions (tooth separation and matrix securing) into a single dental wedge device. The wedge simultaneously exerts expansion force to separate teeth while its wings engage the matrix band, eliminating the need for multiple separate devices and simplifying the restorative procedure
2Adaptability or versatility
If the interproximal space is small and non-uniform, then the anatomical constraints are realistic, but the ease of operation decreases making procedures less efficient
Solution Approach 1:
The dental wedge features non-uniform wing dimensions with different lengths and configurations adapted to specific anatomical locations. The wings are designed with varying sizes to match the specific interproximal space dimensions at different tooth positions, allowing efficient operation in constrained spaces while maintaining anatomical adaptability
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
Enables easier separation of teeth and secure placement of a dental matrix, providing a consistent expansion force during restoration, improving the efficiency and accuracy of dental procedures.
Implementation Method 1
The first sidewall and second sidewall consisting essentially of a shape memory material enabling the first sidewall and second sidewall to transform from a first, resting state wherein the dental wedge is readily deformable to a second, operational state wherein the dental wedge returns to a preformed shape and exerts an expansion force
Implementation Method 2
a bridge disposed between and connecting the first sidewall and second sidewall to form an inverted V-shaped cross section throughout the internal portions of the first sidewall and second sidewall
Data Source
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AI summary
A dental wedge for inserting into the interproximal space between adjacent teeth comprises a first and second sidewall comprised of a shape memory material, including a nickel-titanium alloy, wherein the dental wedge is in a first, resting state when outside of the interproximal space and transforms to a second, operational state when the dental wedge is interested into the interproximal space between adjacent teeth and exposed to a first transformation stimulus, namely exposure to the higher temperature in the interproximal space. The expansion force generated by the dental wedge when in the second, operational stage is sufficient to secure a dental matrix against the tooth being restored and to separate the tooth being restored and adjacent tooth to expand the interproximal space.