Customizable Dental Post with Adjustable Screw Hole
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Solution Overview
Problem
Current dental post solutions for screw-retained prostheses face challenges in achieving optimal aesthetic and mechanical alignment, particularly when implants are positioned at angles, leading to visible screw holes and suboptimal force distribution, limiting their use due to high manufacturing complexities and aesthetic concerns.
Innovation Solution
A customizable dental post with a screw-retained attachment system that allows the upper hole for the retaining screw to be positioned anywhere on the post, manufactured using advanced techniques like CAD/CAM and rapid prototyping, ensuring precise fitting and aesthetic alignment tailored to each patient's specific needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard prefabricated titanium posts are used for screw-retained prostheses, then the prosthesis can be fixed with precision and reversibility, but the screw hole becomes visible in aesthetic areas when the implant is positioned at an angle
Solution Approach 1:
The patent applies dynamics by making the post customizable and adaptable to different implant positions and aesthetic requirements. The post can be designed with varying shapes, materials, and screw hole positions to simultaneously achieve precise mechanical connection and aesthetic appearance, resolving the contradiction between reliability and shape.
Solution Approach 2:
The patent applies local quality by allowing different portions of the post to have different properties. The post can be made of different materials (metal, ceramic, composite) in different sections, and the screw hole can be positioned locally to be hidden from aesthetic views while maintaining precise connection function, thus resolving the contradiction between precision and appearance.
2Shape
If complementary techniques are used to cover the screw hole in aesthetic areas, then aesthetic appearance is improved, but material complexity and procedural steps increase
Solution Approach 1:
The patent applies taking out by extracting the problematic screw hole from the visible aesthetic area. The screw hole is repositioned to non-aesthetic areas or hidden within the post structure itself, eliminating the need for separate complementary covering techniques and reducing procedural complexity while maintaining aesthetic appearance.
Solution Approach 2:
The patent applies merging by combining the aesthetic function and the mechanical connection function into a single integrated post design. The post simultaneously provides precise screw retention and aesthetic appearance without requiring separate complementary techniques, thus reducing device complexity while improving appearance.
3Shape
If cement-retained prostheses are used instead of screw-retained, then aesthetic appearance is improved by avoiding visible screw holes, but precision of connection and reversibility are reduced
Solution Approach 1:
The patent applies composite materials by using combinations of materials (metal, ceramic, composite) for the post construction. This allows the post to provide both the aesthetic appearance of cement-retained prostheses (by hiding the screw hole) and the precision and reversibility of screw-retained prostheses (by maintaining the screw connection mechanism), thus resolving the contradiction between appearance and reliability.
4Reliability
If angled posts are used to match implant position, then mechanical performance is improved, but manufacturing complexity increases due to customization requirements
Solution Approach 1:
The patent applies universality by creating a universal post system that can be adapted to various implant positions and aesthetic requirements through customization. The post design incorporates multiple functions (different angles, materials, screw hole positions) that can be selected and combined as needed, allowing a single versatile design approach to address diverse clinical situations without excessive manufacturing complexity.
Data Source
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AI summary
The present invention relates to a dental post (1) for supporting dental prostheses (2) by means of a screw attachment and method for the manufacture thereof which provides a customizable optimum solution for each case, both from the mechanical viewpoint and from the aesthetic viewpoint, essentially comprising an upper hole (8') into which the retaining screw (4') is screwed for retaining the prosthesis (2) on the post (1) such that the upper hole (8') can be located at any point of the surface of the post once said post (1) has been customized in terms of the shape thereof and type of retention to the prosthesis (2) depending on the mechanical and aesthetic needs of the type of rehabilitation suitable for each particular case.