Offset Dental Implant Abutment for Crown Stability
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Solution Overview
Problem
Dental implant systems face issues with crown adhesive body destruction due to leverage forces when the tooth crown is laterally offset relative to the abutment attachment, leading to potential fracture and inadequate adaptation to oral cavity spatial conditions.
Innovation Solution
The abutment attachment features a laterally offset adhesive base with a connecting portion and a recess for force transmission, allowing vertical force transfer and preventing bending forces on the crown adhesive body, along with a conically tapering screw channel for enhanced stability and anti-rotation features to maintain attachment direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tooth crown is laterally offset relative to the abutment attachment, then the adaptation to oral cavity spatial conditions is improved, but the crown adhesive body is destroyed by leverage forces
Solution Approach 1:
The adhesive base is laterally offset from the fastening section, creating a spatial separation in the horizontal dimension. This dimensional change allows the crown to be positioned laterally while the fastening remains axial, preventing leverage forces from acting on the adhesive body while maintaining adaptability to oral cavity spatial conditions.
2Device complexity
If the adhesive base is centrally located over the fastening section, then the assembly is simplified, but the crown adhesive body is subjected to bending forces and can be destroyed
Solution Approach 1:
The abutment attachment is segmented into functionally distinct components: a fastening section for axial screw attachment and a laterally offset adhesive base for crown bonding. This segmentation separates the fastening function from the bonding function, allowing each to be optimized independently and eliminating the harmful interaction between them.
Solution Approach 2:
The adhesive base is positioned in a different spatial location (laterally offset) from the fastening section, creating a two-zone structure. This spatial separation ensures that axial fastening forces do not create bending moments in the adhesive body, significantly improving reliability.
3Ease of manufacture
If the insertion channel axis is aligned with the screw channel axis, then the manufacturing is simplified, but the lateral force transmission is compromised
Solution Approach 1:
The insertion channel is positioned asymmetrically relative to the screw channel, with its axis offset laterally. This asymmetric arrangement creates an optimized force transmission path that directs lateral forces from the crown through the adhesive base to the abutment attachment, improving mechanical performance while maintaining manufacturability.
Data Source
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AI summary
The present invention relates to a dental implant abutment system comprising: an abutment (A) for an oral implant (Z); a fastening section (A101) for fastening the abutment (A) to the oral implant (Z); a bonding base (A103), which is laterally offset with respect to the fastening section (A101) and on which a crown bonding part (D) as a base for a crown (G) can be bonded; and a related healing cap bonding part (C), a related crown bonding part (D) and a related impression part (E).