Prosthesis Pre-form for Dental Milling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The current methods for producing dental prosthetics, such as full or partial dentures, are time-consuming and costly due to the need for patient-specific molds and extensive material removal from circular-cylindrical blanks, leading to high tool wear and long production times.
Innovation Solution
A prosthetic pre-body with a shape approximating the final product is used, featuring a main body and a holding body, allowing for material savings of over 20% by incorporating recesses and a design that facilitates efficient machining, reducing the need for material removal and tool wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circular-cylindrical blanks are used for producing prosthetic bodies, then high material quality and consistency are achieved, but large amounts of material must be removed resulting in high tool wear and long production times
Solution Approach 1:
The prosthetic pre-body is pre-formed with a shape that approximates the final prosthetic body geometry, including pre-formed surfaces and features that will become part of the final product. This preliminary shaping reduces the amount of material removal required during subsequent CNC machining operations, thereby reducing production time and tool wear while maintaining material quality consistency.
Solution Approach 2:
The invention changes the geometric parameters of the starting material from a standard circular-cylindrical blank to a custom-shaped pre-body that matches the target prosthetic geometry. This parameter change in the initial form factor optimizes the subsequent machining process by minimizing material removal volume while preserving the high material quality of the base material.
2Reliability
If circular-cylindrical blanks are used for producing prosthetic bodies, then high material quality is achieved, but high tool wear occurs due to extensive material removal
Solution Approach 1:
The pre-body is pre-formed with a shape that approximates the final prosthetic body, including pre-formed surfaces and features. This preliminary shaping significantly reduces the volume of material that must be removed during CNC machining, thereby reducing tool wear and extending tool life while maintaining the high material quality of the base material.
Solution Approach 2:
The invention changes the geometric parameters of the starting material from a standard circular-cylindrical blank to a custom-shaped pre-body that matches the target prosthetic geometry. This parameter change minimizes the material removal volume, directly reducing tool wear and associated costs while preserving material quality.
3Adaptability or versatility
If patient-specific molds are created for each denture base, then custom-fit prosthetics are produced, but the process becomes extremely time-consuming and expensive
Solution Approach 1:
The prosthetic pre-body is pre-formed with a shape that approximates the final prosthetic body geometry. This preliminary preparation enables subsequent individualization through efficient CNC machining and patient-specific adaptations, allowing customization without the time-consuming process of creating unique molds for each patient.
Solution Approach 2:
The invention replaces the traditional mechanical mold-making process with a digital design and CNC machining approach. Patient-specific adaptations are achieved through digital modeling and automated machining, eliminating the need for physical mold creation while maintaining customization capabilities and significantly reducing production time.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
According to the invention, in order to produce a dental prosthetic body for an upper or lower jaw prosthesis, a prosthetic preform is provided, said prosthetic preform having approximately the same shape as the prosthetic body. As a result, a high quality prosthetic body can be produced and customized, for example, by milling the prosthetic prebody.