Denture Manufacturing Using Segmented Jig and Milling
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Solution Overview
Problem
Conventional denture manufacturing methods, such as milling and 3D printing, are slow, costly, and lack precision due to the need for individualized false teeth production, resulting in low strength and aesthetic quality.
Innovation Solution
A method using a combination of an upper/lower jaw-shaped soft jig and a hard jig, where false teeth roots are cut to the same depth as the wearer's original teeth during milling, with undercuts provided for enhanced gum structure integration, reducing manufacturing time and cost while improving denture quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional milling methods are used to manufacture each false teeth individually, then manufacturing precision can be maintained, but working speed becomes slow and manufacturing cost increases
Solution Approach 1:
The false teeth are divided into two distinct parts: a standardized body portion that can be mass-produced, and a customized root portion that is individually milled to match the wearer's original teeth. This segmentation allows the majority of the false teeth to be manufactured quickly using standardized molds, while only the root portions require precision milling, thereby resolving the contradiction between manufacturing precision and productivity.
Solution Approach 2:
The invention performs preliminary actions by pre-manufacturing standardized false teeth bodies and preparing molds in advance. The root portions are then attached to these pre-prepared bodies, eliminating the need to mill entire false teeth from scratch. This preliminary preparation significantly accelerates the manufacturing process while maintaining precision where needed.
2Manufacturing precision
If conventional milling methods are used to manufacture each false teeth individually, then manufacturing precision can be maintained, but manufacturing cost increases
Solution Approach 1:
By segmenting the false teeth into standardized bodies and customized roots, the invention enables mass production of the body portions using cost-effective molding techniques, while only the smaller root portions require expensive precision milling. This segmentation dramatically reduces overall manufacturing cost while preserving necessary precision.
Solution Approach 2:
The invention changes the manufacturing parameters by switching from complete individual milling to a hybrid approach: molding for bodies (lower cost, high volume) and selective milling for roots (higher cost, low volume). This parameter change optimizes the cost-precision balance by applying the appropriate manufacturing method to each component.
3Productivity
If 3D printing is used to manufacture false teeth, then manufacturing speed can be improved, but the beauty and strength of the false teeth decrease
Solution Approach 1:
The invention uses composite manufacturing approaches: standardized bodies are produced through molding or 3D printing for speed, while root portions are manufactured using traditional milling techniques that ensure superior strength and aesthetic quality. The combination of different manufacturing methods for different components resolves the contradiction between manufacturing speed and quality.
4Productivity
If 3D printing is used to manufacture false teeth, then manufacturing speed can be improved, but manufacturing cost increases
Solution Approach 1:
The invention segments the false teeth into bodies and roots, allowing bodies to be manufactured quickly via 3D printing or molding, while roots use cost-effective standardized molds. This segmentation enables high-speed manufacturing without the high costs associated with printing entire custom false teeth, resolving the contradiction between productivity and manufacturing cost.
Data Source
AI summary
The present inventive concept relates to a method of manufacturing dentures by using a jig, the method including: planting false teeth in a soft jig to expose roots of the false teeth to outside of the soft jig; inserting the soft jig into a hole provided in a hard jig; cutting exposed portions of the false teeth to a depth set by a controller of a milling machine; and inserting the cut false teeth into a false teeth groove of a gum structure.