Laser-Cut Dental Prosthesis Shaping With Internal Stress
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Solution Overview
Problem
Conventional dental prosthesis production methods require extensive processing time due to the need to cut and remove unnecessary portions of the processing target, which can lead to increased production time and tool wear.
Innovation Solution
A method utilizing laser light to create processing points and planes on a laser-transparent processing target, allowing for the production of dental prostheses without cutting away the entire unnecessary region, thereby reducing processing time and minimizing tool wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a processing tool is used to cut and remove unnecessary portions of the processing target, then the dental prosthesis can be produced with precise shape, but the processing time is extended
Solution Approach 1:
The patent replaces the mechanical cutting system with a laser-based system. The laser light creates processing points and planes within the processing target through optical energy, eliminating the need for mechanical contact and cutting tools. This substitution dramatically reduces processing time while maintaining the ability to produce precise dental prosthesis shapes through controlled laser irradiation patterns.
Solution Approach 2:
The patent applies preliminary action by creating processing points and planes within the processing target before final separation. The laser pre-processes the material by forming internal structures and weakening bonds along desired cut paths, enabling subsequent easy separation without extensive mechanical cutting. This preliminary laser treatment reduces the overall processing time while ensuring precise final geometry.
2Manufacturing precision
If a processing tool is used to cut the processing target, then the dental prosthesis can be produced with desired shape, but tool wear increases
Solution Approach 1:
The patent eliminates mechanical cutting tools by using laser light to process the dental ceramic material. The laser creates processing points and planes through optical energy absorption and thermal effects, completely avoiding mechanical contact that causes tool wear. This non-contact processing method maintains manufacturing precision while eliminating tool wear and associated maintenance costs.
Solution Approach 2:
The patent changes the processing parameter from mechanical force to optical energy. By using laser light with specific wavelengths and intensities that are absorbed by the dental ceramic material, the process transforms material through thermal and structural changes rather than mechanical removal. This parameter change eliminates tool wear while maintaining the ability to create precise dental prosthesis shapes.
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
This approach significantly shortens the production time of dental prostheses and reduces tool wear, enabling more efficient and cost-effective manufacturing by using laser light to form and cut the prostheses with internal stress without cracking.
Implementation Method 1
A method utilizing laser light to create processing points and planes on a laser-transparent processing target
Implementation Method 2
irradiating a processing target with laser light, so that a plurality of processing points representing an outer shape of a dental prosthesis are created in the processing target
Data Source
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AI summary
A method for producing a dental prosthesis 10 includes preparing three-dimensional data on the dental prosthesis 10, preparing a processing target 5 that transmits laser light LA, setting processing points 6 representing an outer shape of the dental prosthesis 10 based on the three-dimensional data, setting a to-be-cut plane 7 extending from a surface of the processing target 5 to the processing points 6, creating the processing points 6 in the processing target 5 by irradiating the processing target 5 with the laser light LA, and cutting a portion of the processing target 5 that is outward of the dental prosthesis 10 with an internal stress by irradiating the processing target 5 with the laser light LA along the to-be-cut plane 7.