3D Stabilization Thread Form for Dental Implant Lateral Movement
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Solution Overview
Problem
Dental implants face challenges in achieving three-dimensional stabilization within osteotomies, as existing thread forms lack sufficient mechanical retention or friction retention features, leading to instability and potential movement within the bone.
Innovation Solution
A dental implant with a tapered body featuring a three-dimensional stabilization thread form, including curved and linear surfaces, is designed along its outer periphery, providing a unique feature set that restricts lateral movement by varying dimensions across the thread profile, enhancing mechanical retention and friction retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard thread forms are used, then the implant structure is simple, but the mechanical retention and friction retention are insufficient leading to instability
Solution Approach 1:
The patent transitions from conventional two-dimensional thread profiles to a three-dimensional thread form with varying depths and angles. The thread includes a crest portion, root portion, superior flank portion, and inferior flank portion with different dimensional characteristics that work together to provide multi-directional stabilization and enhanced mechanical retention within the osteotomy site.
Solution Approach 2:
Different portions of the thread form are designed with locally optimized geometries. The crest portion has specific dimensional characteristics for engagement, the root portion provides anchoring, and the flank portions offer friction retention. Each section's local geometry is tailored to its specific function in achieving overall stability.
2Strength
If the thread form is designed with three-dimensional stabilization features, then the mechanical retention is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The thread form is segmented into distinct functional zones including the crest portion, root portion, superior flank portion, and inferior flank portion. Each segment can be optimized independently for its specific retention function while maintaining compatibility with standard implant manufacturing processes through controlled dimensional variations.
3Stability of the object's composition
If the thread form restricts lateral movement effectively, then the implant stability is improved, but the insertion force required increases
Solution Approach 1:
The thread form incorporates curved surfaces and rounded transitions between different portions (crest, root, flanks) to distribute insertion forces more evenly. The curved geometry allows for progressive engagement with the bone while maintaining effective lateral restriction, reducing peak insertion force requirements compared to sharp-edged conventional threads.
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 three-dimensional stabilization thread form effectively stabilizes the implant in three dimensions within the osteotomy, maximizing restriction against lateral movement and improving osseointegration through a particle blast process that roughens the surface, thereby enhancing bone integration.
Implementation Method 1
enhancing mechanical retention and friction retention
Data Source
AI summary
An implant for insertion within a maxillofacial bone of a patient including a tapered body and one or more threads formed along the body. The one or more threads on one or more lead threads include multiple thread forms including both three-dimensional stabilization thread and standard thread (e.g. v-thread, buttress thread, etc.) forms. The one or more threads including the multiple thread forms provides for maximizing the restriction of lateral movement of the implant within a full or partial osteotomy.