Digital Overdenture Manufacturing with Flattening Guide
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for manufacturing overdentures face challenges in precision due to difficulties in obtaining accurate alveolar bone and gum information, leading to discomfort and irritation for patients, especially when dealing with curved alveolar bones and soft tissue, and require extensive time and expertise for implantation and fitting.
Innovation Solution
A method involving the design and manufacturing of a digital overdenture using a surgical guide and flattening guide, which includes a shape-coupling groove, stopper connecting portion, and flattening anchor fixing portion, to align and flatten the alveolar bone precisely, allowing for accurate implantation of fixtures and reduction in treatment time through 3D printing technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional impression body methods are used to obtain oral cavity information, then the process is simple to perform, but excessive time is consumed and precise oral cavity information cannot be obtained due to gum pressurization
Solution Approach 1:
The patent uses 3D scanning technology to create a digital copy of the oral cavity and alveolar bone structure, replacing conventional physical impression bodies. This digital copying method eliminates the need for physical mold-making processes, significantly reducing time consumption while providing precise three-dimensional information about the oral cavity without pressurizing the gum tissue.
2Ease of operation
If ball type coupling device is used with separate coupling for each fixture, then the overdenture can be detached like a denture, but precise position of each abutment is required for proper installation
Solution Approach 1:
The patent merges multiple separate ball-type coupling devices into a single integrated bar-type coupling device that spans across multiple fixtures. This unification reduces the number of individual coupling points from multiple separate abutments to a single continuous bar structure, thereby reducing the cumulative positioning errors and simplifying the requirement for precise individual abutment placement while maintaining detachability.
3Ease of manufacture
If bar type coupling device is used to pass through multiple fixtures, then it is easier to fasten than ball type, but implantation heights of fixtures must mutually coincide which is difficult on curved alveolar bone
Solution Approach 1:
The patent introduces an adjustable bar-type coupling device with modifiable geometry that can adapt to curved alveolar bone surfaces. The bar structure incorporates adjustable parameters such as curvature radius, length, and angle of inclination, allowing it to conform to the specific anatomical shape of the patient's jawbone. This dynamic adaptability enables the bar to pass through multiple fixtures at varying heights and angles while maintaining ease of fastening.
4Ease of manufacture
If dental cement is applied to bond denture to gum surface, then the denture can be installed on gum, but occlusal pressure directly applied to gum causes irritation and pain
Solution Approach 1:
The patent introduces an overdenture system with a bar-type coupling device that acts as an intermediary structure between the denture and the supporting fixtures implanted in the alveolar bone. This intermediary mechanism transfers occlusal pressures from the denture through the bar coupling to the fixtures embedded in the bone, bypassing the gum tissue entirely. Consequently, the gum is relieved from direct pressure contact, eliminating irritation and pain while maintaining secure denture installation.
Data Source
AI summary
Disclosed is a method of manufacturing a digital overdenture to improve manufacturing convenience and preciseness. The method of manufacturing the digital overdenture according to the present invention includes a series of operations such as generating a planning image, manufacturing auxiliary devices for manufacturing the overdenture such as a surgical guide, a flattening guide, an impression model, and the like, setting a holder device and correcting a temporary denture, obtaining a corrected-scanned image, and designing and manufacturing a digital overdenture.