Interproximal Crown Lengthening Blade with Segmented Sharp and Blunt Edges
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Solution Overview
Problem
Existing dental instruments, such as hand chisels, bone files, high-speed rotary instrumentation, ultrasonic cutting devices, and piezoelectric cutting devices, are not well-suited for interproximal crown lengthening procedures due to their size and the risk of damaging adjacent teeth, and are often costly and require multiple attachments.
Innovation Solution
A blade with a flat planar body featuring a forward shaving portion and a rear attachment portion, including laterally opposed edges and blunt and sharp cutting edges, designed for precise bone shaving during osseous resection, which can be attached to a conventional scalpel handle, minimizing trauma and injury risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional dental instruments (hand chisels, bone files, high-speed rotary instrumentation) are used for interproximal crown lengthening, then bone resection can be performed, but the risk of damaging adjacent teeth increases and the instruments are not well adapted for tight interproximal spaces
Solution Approach 1:
The blade is designed with a segmented structure featuring a narrow forward shaving portion and a wider rear attachment portion. This segmentation allows the cutting edge to access tight interproximal spaces while the broader base provides stability and attachment capability, resolving the contradiction between adaptability and safety.
Solution Approach 2:
The blade exhibits local quality variations with different edge characteristics: the forward shaving portion has sharp cutting edges for precise bone removal, while the rear attachment portion has blunt edges to prevent tooth damage. This localized differentiation of edge properties directly addresses the contradiction by making the cutting zone sharp and the non-cutting zones blunt.
2Manufacturing precision
If piezoelectric and ultrasonic cutting devices are used, then precise bone cutting can be achieved, but the cost increases significantly and numerous additional attachments are required
Solution Approach 1:
The blade is designed as a universal tool that can be attached to conventional scalpel handles, making it compatible with existing surgical equipment. This eliminates the need for specialized piezoelectric or ultrasonic devices and their numerous attachments, while maintaining precise bone cutting capability through the specially designed sharp and blunt edge configuration.
Solution Approach 2:
The blade represents a cost-effective, simple design that can be manufactured economically and disposed of after use, eliminating the high cost and complexity of expensive reusable piezoelectric and ultrasonic devices. The simplicity of the design allows for economical production while maintaining surgical precision.
Data Source
AI summary
The blade for interproximal crown lengthening may be used to shave bone during osseous resection in an interproximal crown lengthening procedure. The blade includes a flat planar blade body with a forward shaving portion and a rear attachment portion, and longitudinally opposed forward and rear edges. The forward shaving portion has laterally opposed first and second edges, and the rear attachment portion also has laterally opposed first and second edges. The second edge of the forward shaving portion has first and second blunt portions with a sharp shaving portion positioned therebetween. The first blunt portion of the second edge of the forward shaving portion is located adjacent to the forward edge of the planar blade body such that the sharp shaving portion is spaced apart therefrom. An opening is formed through the rear attachment portion for attachment to a conventional scalpel handle or the like.