Dental Prosthesis Lingual Edge Design for Comfort
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Solution Overview
Problem
Conventional dental prostheses, such as overdentures, face limitations in comfortability due to the size of the prosthesis on the lingual side, leading to discomfort and potential damage from excessive occlusal pressure, especially during mandible movement.
Innovation Solution
The dental prosthesis system reduces the size of the prosthesis on the lingual side by positioning the outer edge further towards the facial side, with dimensions d1 and d2 set to ≤20 mm, and incorporates a base with high elasticity to absorb occlusal pressure, distributing it evenly across teeth and reducing the burden on specific areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dental prosthesis size on the lingual side is reduced by positioning the outer edge further towards the facial side, then wearing comfortability is improved, but the structural stability and load-bearing capacity may be compromised
Solution Approach 1:
The patent applies parameter changes by optimizing the dimensional parameters d1 and d2 (representing the lingual extension distance of the prosthesis) to be ≤20mm. This quantitative parameter adjustment reduces the prosthesis size on the lingual side, thereby improving wearing comfortability while maintaining structural stability through controlled dimensional limits.
2Ease of operation
If the dental prosthesis size is reduced to improve comfortability, then the burden on specific areas is reduced, but the load-bearing capacity may be insufficient
Solution Approach 1:
The patent applies local quality by concentrating the prosthesis structure and occlusal load-bearing elements in specific strategic areas rather than uniformly distributing them. The base structure is positioned to engage with the alveolar ridge at optimized locations, and the occlusal surfaces are designed to distribute forces evenly across selected contact points, thereby maintaining load-bearing capacity despite reduced overall prosthesis size.
3Ease of operation
If the prosthesis is designed to be detachable and self-worn, then ease of operation is improved, but the reliability and precision of fit may be compromised
Solution Approach 1:
The patent applies self-service by designing the overdenture with a detachable structure that enables the user to independently attach and detach the prosthesis from the support structure. The engagement mechanism is designed to be user-operable without requiring professional assistance, thereby improving ease of operation while maintaining reliable fit through well-designed engagement features that ensure secure attachment when worn.
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 configuration significantly improves wearing comfortability and reduces the risk of damage from occlusal pressure, ensuring the prosthesis remains balanced and stable during mandible movement.
Implementation Method 1
incorporates a base with high elasticity to absorb occlusal pressure, distributing it evenly across teeth and reducing the burden on specific areas
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
User can attach and detach a prosthesis at will, and comfortability while wearing it is further improved. A dental prosthesis 12 of a dental prosthesis system 1 includes an incurved contact surface 58a that contacts a gingiva 24. In a first reference cross-sections including first reference lines, a distance d1 between a first point and an outer edge of the dental prosthesis 12 on a lingual side satisfies d1 ≤ 20 mm in an incisal portion, where the first point is an intersection of the contact surface 58a and a line connecting a center of a prosthetic tooth 32 and a position that is offset, in a direction parallel to the first reference lines, to the lingual side by 3 mm from a base end point of the prosthetic tooth 32, and in a occlusal portion, a distance d2 between a second point and the outer edge of the dental prosthesis 12 on the lingual side satisfies d2 < 20 mm, where the second point is an intersection of the contact surface 58a and a line connecting a center of a prosthetic tooth 38 and a position that is offset, in the direction parallel to the first reference lines, to the lingual side by a/2 (a being a buccolingual diameter of the prosthetic tooth 38 in the corresponding first reference cross-section) from a base end point of the prosthetic tooth 38.