Abutment with Integrated Impression Attachment for Dental Implant Accuracy
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Solution Overview
Problem
The existing method of manufacturing implant prosthetic parts is complex and prone to errors due to the use of impression copings, which are disposable and lead to poor bonding and mismatched abutments with surrounding tissues when reused after sterilization and disinfection.
Innovation Solution
An implant prosthetic part set that includes an abutment with a cylindrical shape and a hexagonal lower end, an impression attachment part, and an abutment fixing screw, allowing for direct impression taking in the oral cavity without the need for impression copings, enabling more accurate and economical manufacturing of replication plaster models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If impression copings are used to take impressions of the fixture, then the impression can be obtained, but the bonding quality deteriorates due to repeated coupling and abrasion of the analog
Solution Approach 1:
The invention extracts and eliminates the impression coping component from the traditional implant workflow. Instead of using a separate impression coping that couples to the fixture, the abutment itself is designed to directly receive the impression material, removing the intermediate coupling step that causes abrasion and bonding deterioration.
Solution Approach 2:
The invention merges the functions of the impression coping and the abutment into a single integrated component. The abutment structure combines both the prosthetic function and the impression-taking function, eliminating the need for separate coupling steps between impression coping and analog.
2Ease of manufacture
If disposable impression copings are used, then the impression process can be completed, but the economic efficiency deteriorates due to the need to discard the copings
Solution Approach 1:
The abutment serves its own dual purpose: it functions as both the prosthetic component that supports the artificial tooth and as the impression-receiving component. This self-service design eliminates the need for separate disposable impression copings, allowing the same component to be reused without discarding.
3Ease of operation
If the analog is coupled twice (to impression coping and then to abutment), then the prosthetic operation can be completed, but the manufacturing complexity increases
Solution Approach 1:
The invention removes the intermediate impression coping step from the coupling sequence. The traditional two-step coupling (fixture to impression coping, then impression coping to analog) is simplified to a direct coupling (fixture to abutment, then abutment to analog), reducing the number of components and coupling operations required.
4Loss of substance
If impression copings are reused after sterilization and disinfection, then the cost is reduced, but the matching accuracy with surrounding tissues deteriorates
Solution Approach 1:
The abutment is designed to function as its own impression-receiving component, eliminating the need for separate impression copings that would require sterilization and reuse. This self-service design ensures that the component maintaining contact with the fixture and surrounding tissues is the final prosthetic component itself, ensuring continuous accuracy without degradation from repeated sterilization cycles.
Data Source
AI summary
Provided are an implant prosthetic part set and a method of manufacturing replication plaster model including an abutment using the same, which can take an impression of the location and the shape of a fixture in an oral cavity without using a typical impression copping, in order to manufacture an upper prosthesis coupled to the fixture implanted into an alveolar bone.