Dental Prosthesis Reinforcing Sleeve for Implant Stability
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Solution Overview
Problem
Existing dental prostheses face challenges in achieving a passive fit with dental implants, which can lead to biological and mechanical complications, and limit the range of torque forces that can be applied during attachment.
Innovation Solution
The use of a reinforcing sleeve within the dental prosthesis, which provides a recess structure to securely receive a dental implant fixture or abutment, enhancing the stability and precision of the connection between the prosthesis and the implant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a dental prosthesis is directly attached to a dental implant fixture without a reinforcing sleeve, then the structure is simpler, but the torque force application is limited and passive fit is difficult to achieve
Solution Approach 1:
A reinforcing sleeve is introduced as an intermediary component between the dental implant fixture and the dental prosthesis. The sleeve receives the implant fixture and provides a recess structure that enables secure attachment, allowing higher torque forces to be applied while maintaining structural integrity and achieving passive fit.
Solution Approach 2:
The reinforcing sleeve is made from a material that is stronger and more rigid than the polymeric prosthesis material (such as metal or ceramic). This composite construction combines the biocompatibility and aesthetics of the polymeric prosthesis with the mechanical strength of the sleeve material, enabling higher torque application and improved passive fit.
2Reliability
If a reinforcing sleeve is added to the dental prosthesis, then higher torque forces can be applied and passive fit is improved, but the device complexity increases
Solution Approach 1:
The reinforcing sleeve acts as a mediator that ensures precise positioning and passive fit between the implant fixture and prosthesis. The sleeve's recess structure is designed to receive the implant fixture with precise tolerances, eliminating the need for complex adjustment mechanisms and reducing overall system complexity.
Solution Approach 2:
The attachment system is segmented into distinct components: the implant fixture, the reinforcing sleeve, and the prosthesis. This segmentation allows each component to be optimized independently for its specific function, with the sleeve providing the precise interface for passive fit while keeping the overall design manageable.
3Strength
If a reinforcing sleeve is used to enhance stability, then the connection between prosthesis and implant is stronger, but the manufacturing process becomes more complex
Solution Approach 1:
The reinforcing sleeve is pre-formed with the precise recess geometry required to receive the implant fixture. This preliminary preparation of the sleeve allows for standardized manufacturing processes and simplifies the final assembly, as the sleeve is already configured to provide the required connection strength without requiring complex post-processing or adjustment.
Data Source
AI summary
A dental prosthesis formed of a composition comprising a polymeric material, the prosthesis comprising one or more locating formations adapted to receive a dental implant fixture or dental abutment, the or each locating formation comprising a recess comprising a first recess portion formed in the polymeric material of the prosthesis, and a second recess portion provided in a sleeve located in the prosthesis.