Dental Prosthesis Base Internal Structure Determination
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Solution Overview
Problem
Current dental prosthesis bases lack a truly natural appearance due to uniform optical properties, failing to accurately simulate the natural variations in color, brightness, and translucency of gums.
Innovation Solution
A method for determining the internal structure of a dental prosthesis base by obtaining outer shell data, identifying a gum ridge line, and defining separation surfaces to create sub-volumes with varying optical properties, thereby enhancing the natural appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform synthetic material is used for the dental prosthesis base, then manufacturing is simple, but the appearance does not closely approximate natural gums
Solution Approach 1:
The dental prosthesis base is divided into multiple sub-volumes with different optical properties (color, brightness, translucency). This segmentation allows each sub-volume to simulate different regions of natural gum tissue, achieving a more realistic appearance while maintaining manufacturability through systematic material assignment to defined geometric regions.
Solution Approach 2:
Different sub-volumes of the dental prosthesis base are assigned different optical properties to match the local characteristics of natural gums in different regions. This local differentiation of material properties enables the prosthesis to accurately represent the natural variation in gum appearance without complicating the overall manufacturing process.
2Productivity
If the dental prosthesis base has uniform optical properties, then production is straightforward, but it fails to simulate natural gum variations in color, brightness, and translucency
Solution Approach 1:
The method pre-defines sub-volumes and assigns specific optical properties to each region before manufacturing. This preliminary structuring of optical properties allows for efficient production while ensuring accurate simulation of natural gum variations, as the material assignment is systematically determined from the geometric model rather than requiring complex post-processing or manual adjustment.
Solution Approach 2:
The invention varies optical parameters (color, brightness, translucency) across different sub-volumes of the dental prosthesis base to match the natural variation in gum tissue. This parameter differentiation is achieved through a systematic method that maintains production efficiency while accurately representing the complex optical properties of natural gums in different regions.
Data Source
AI summary
A method for determining an internal structure of a dental prosthesis base. The method includes obtaining outer shell data of the dental prosthesis base. Gum ridge line data are obtained. A first reference line is defined by parallel displacement of the gum ridge line or the gum ridge line is defined as a first reference line. A first reference point is defined which lies above or below the dental prosthesis base. A first separation surface is defined as a surface which comprises all straight lines which extend through the first reference point and through the first reference line. At least one sub-volume of the dental prosthesis base is deduced as volume delimited by the first separation surface and the outer shell. A dental prosthesis base is presented. A data-processing device, a computer program and a computer-readable medium are also described.