Condensing Implant Burnishing Edges for Rapid Bone Stability
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Solution Overview
Problem
Current medical implants, such as dental and orthopedic implants, require several months to reach sufficient stability due to the slow bone integration process, which delays their loading and functionality.
Innovation Solution
A bone implant with a conically tapered profile and burnishing edges that apply circumferentially sweeping compressive strain to the osteotomy walls during insertion, enhancing initial stability and promoting bone regeneration through strain hardening and micro-crack activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional threaded implants are used, then the implant can be securely anchored in bone, but it requires several months to reach sufficient stability due to slow bone integration
Solution Approach 1:
The burnishing edges perform preliminary condensation and compaction of the osteotomy walls before the threads engage the bone. This preliminary action creates immediate mechanical interlocking and accelerates the bone integration process, allowing the implant to reach sufficient stability much faster than traditional implants.
Solution Approach 2:
The invention changes the physical state and density parameters of the osteotomy walls through burnishing action. By applying circumferentially sweeping compressive strain, the bone material is condensed and densified, creating immediate mechanical stability and enhancing the rate of osseointegration.
2Reliability
If the implant is designed with aggressive threading for immediate stability, then initial anchorage is improved, but bone damage and micro-cracks increase
Solution Approach 1:
The burnishing action intentionally applies controlled compressive strain that creates micro-cracks and condenses bone material. These micro-cracks, while appearing harmful, actually stimulate bone regeneration and remodeling processes. The controlled damage is converted into a beneficial stimulus for accelerated osseointegration and long-term stability.
3Ease of operation
If the implant uses a tapered profile for self-locking, then insertion force is reduced, but control over insertion depth becomes more difficult
Solution Approach 1:
The implant features a conically tapered profile specifically in the central region where burnishing occurs, while the apical and coronal regions maintain different geometric characteristics. This localized tapering provides self-locking and reduced insertion force in the critical mid-section without compromising overall insertion control or thread engagement at the ends.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The implant achieves rapid initial stability and accelerated long-term stability by self-locking into the bone and stimulating natural bone regeneration, allowing for immediate loading and improved osseointegration.
Implementation Method 1
The central region includes at least one longitudinally extending burnishing edge configured to apply a circumferentially sweeping compressive strain to the interior surface of the osteotomy with a burnishing action while the implant is being screwed into position
Implementation Method 2
the burnishing edges condense and densify the surrounding walls of the hole, thereby enhancing initial implant stability. A still further advantage provided by the one or more burnishing edges is its ability to strengthen the surrounding material or bone through the introduction of stresses between the material's yield point and its ultimate tensile strength, thereby provoking strain hardening, which occurs because of dislocation movements and dislocation generation within the crystal structure of the material
Implementation Method 3
In bone, a permanent change in shape is believed to be associated with micro-cracks that allow energy release, a natural defense mechanism of living bone. This energy release naturally activates bone regeneration for successful long-term implant stability
Implementation Method 4
When the implant reaches full depth in the hole and stops rotating, the built-up stresses begin to fill in around the burnishing edges. This almost immediate elastic response of the bone or other material surrounding the hole provides a favorable high initial implant stability
Data Source
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AI summary
An anchoring implant to be screwed into a hole and self-lock therein with secure stability. The implant, which may be used in dental, orthopedic or any of several non-medical applications, has a conically tapered profile with an aggressively-threaded, self-tapping apical end. A central region of the implant is formed with a plurality of burnishing edges each configured to apply a circumferentially sweeping compressive strain to the interior surface of the hole with a burnishing action while the implant is being screwed into position. A coronal end of the implant includes a corking feature to avert mushrooming around the perimeter of the hole. A central thread profile may extend through and intersect the burnishing edges to provide either enhanced self-tapping or enhanced corking functionality. The extreme coronal end comprises a platform for receiving an abutment or other fastening element via an internal connect feature.