Dental Implant Abutment With External Screw Head for Smaller Posts
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Solution Overview
Problem
Conventional dental implant structures face limitations in forming abutments with desired diameters and thicknesses due to the accommodation of the abutment screw's head portion within the abutment, which restricts the size and strength of the post, particularly in mandibular anterior teeth, and complicates the formation of coupling grooves for elastic rings.
Innovation Solution
A dental implant structure with a separable abutment screw design where the head portion protrudes above the post, allowing for a reduced inner diameter of the abutment, featuring a coupling groove for an elastic ring and an elastic body to stabilize the crown and absorb occlusal forces without affecting the post's diameter and thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the head portion of the abutment screw is accommodated inside the abutment, then the abutment structure is compact, but the diameter and thickness of the post cannot be formed to the target size
Solution Approach 1:
The head portion of the abutment screw is extracted from the interior space of the abutment and positioned externally. This removes the constraint that the inner diameter of the abutment must accommodate the head portion, allowing the post to be formed with the desired diameter and thickness without being limited by the head portion's dimensions.
2Strength
If the head portion diameter is increased to 2.3-2.4mm, then the screw connection strength is improved, but the abutment post diameter must be increased to at least 2.8mm
Solution Approach 1:
By extracting the head portion from the abutment interior and positioning it externally, the abutment post diameter is no longer constrained by the head portion diameter. This allows the post to maintain a smaller diameter while the head portion retains its larger diameter for sufficient screw connection strength.
Solution Approach 2:
The head portion is moved from the internal dimension (inside the abutment) to an external dimension (above the abutment). This spatial repositioning separates the functional requirements: the post diameter can be optimized for structural considerations while the head portion diameter can be optimized for screw connection requirements independently.
3Length of stationary object
If the post diameter is reduced for mandibular anterior teeth, then the aesthetic appearance is improved, but the outer wall angle approaches 90° causing difficulty in crown passing
Solution Approach 1:
By extracting the head portion from the abutment interior, the post can be designed with a smaller diameter suitable for mandibular anterior teeth without requiring a tapered shape. The post can maintain a more favorable outer wall angle for crown passing while the head portion provides the necessary structural support externally.
Data Source
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AI summary
The present disclosure relates to a dental implant structure having a separable abutment screw, the structure fastening and fixing, through an abutment screw, an abutment to a fixture implanted in the alveolar bone, and, more specifically, to a dental implant structure provided such that a head portion of an abutment screw is not accommodated in an abutment and protrudes from the top of an abutment post so that the diameter (inner diameter) of an inner space of the abutment can be reduced, and thus the diameter and thickness of the abutment post can be freely formed in a desired size.