Dental Implant Thread Crest Roughness for Stability
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Solution Overview
Problem
Roughening the surface of dental implants to enhance osseointegration can compromise the integrity of the implant's cutting geometry, leading to potential instability and misinterpretation of tactile feedback during implant placement.
Innovation Solution
A dental implant design with a threaded surface where only the root and flank regions are roughened, typically through acid etching or grit blasting, while the crest remains relatively smooth, to promote osseointegration without compromising the implant's stability and tactile feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the implant surface is roughened to enhance osseointegration, then osseointegration is improved, but the cutting geometry integrity is compromised
Solution Approach 1:
The patent applies different surface qualities to different regions of the implant threads. The root and flank regions are roughened to enhance osseointegration, while the crest regions remain smooth to maintain cutting geometry integrity. This localized differentiation resolves the contradiction by providing each region with the specific surface quality it needs for its function.
2Reliability
If the implant surface is roughened to enhance osseointegration, then osseointegration is improved, but tactile feedback accuracy is compromised
Solution Approach 1:
The patent maintains smooth crest regions that preserve accurate tactile feedback during implant placement, while roughening only the root and flank regions for osseointegration enhancement. This allows the clinician to receive accurate tactile information during insertion without sacrificing bone integration capabilities.
3Reliability
If the implant surface is roughened to enhance osseointegration, then secondary stability is improved, but primary stability is compromised
Solution Approach 1:
The patent differentiates surface treatment by location: smooth crests maintain the mechanical interlocking and primary stability needed during insertion, while roughened roots and flanks provide the surface area and texture needed for secondary stability through osseointegration. This spatial differentiation resolves the stability contradiction.
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
This approach enhances osseointegration while maintaining the implant's stability and tactile feedback integrity, reducing the risk of false positives or negatives during implant placement.
Implementation Method 1
Non-limiting examples of processes for roughening an implant surface include acid etching, grit blasting, or a combination thereof, which impart roughness on the surface.
Implementation Method 2
Non-limiting examples of processes for roughening an implant surface include acid etching, grit blasting, or a combination thereof, which impart roughness on the surface.
Data Source
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AI summary
An implant for implantation into bone tissue includes an elongated body having an outer surface. The outer surface hast least one thread. The thread makes a number of turns around the body of the implant and includes a root, a flank and a crest. The root and a segment of the flank have a roughened portion compared to the crest. A method of forming an implant having a threaded outer surface including a root, a flank, and a crest includes treating the threaded outer surface at only the root and a portion of the flank while the crest remains untreated.