Dental Compression Tool with Asymmetric Flutes for Bone Densification
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Solution Overview
Problem
Current dental implantation tools are inefficient due to prolonged procedures, vibration issues, heat generation, and risk of membrane penetration, requiring multiple drills and continuous water irrigation, which complicates the densification and compaction of bone material around implant sites.
Innovation Solution
A compression tool with a shank featuring non-equiangularly spaced left-handed flutes and a tapered design for clockwise rotation, which entraps bone particles and compresses them radially, reducing heat and eliminating the need for multiple tools and water irrigation, while preventing membrane penetration with a flat distal end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple drills or osteotomes with progressively larger diametrical extents are used to incrementally enlarge the osteotomy, then the desired diametrical extent is achieved, but the procedure becomes unnecessarily prolonged and tedious
Solution Approach 1:
The single osteotome is segmented into multiple flutes (e.g., three flutes) with progressively larger diametrical extents along its length. Each flute acts as an independent cutting element that can be engaged at different depths, allowing the surgeon to achieve progressive enlargement without changing tools.
Solution Approach 2:
Multiple cutting functions that previously required separate drills are merged into a single osteotome tool. The osteotome combines multiple flute structures with different diametrical extents in one instrument, eliminating the need for periodic tool exchanges during the procedure.
2Ease of manufacture
If equiangularly spaced flutes are used in the drill or osteotome, then the structure is simple and manufacturable, but chattering or vibration occurs during rotational movement
Solution Approach 1:
The flutes are positioned asymmetrically around the longitudinal axis rather than being equiangularly spaced. This asymmetric arrangement disrupts the periodic vibration patterns that cause chattering during rotation, while still maintaining structural simplicity and ease of manufacture.
3Measurement precision
If the surgeon employs a bouncing technique with axial reciprocation to monitor depth, then depth control is attempted, but the process becomes discontinuous, imprecise, and prolonged
Solution Approach 1:
The osteotome includes a depth gauge that automatically indicates the current depth during continuous rotation, eliminating the need for the surgeon to manually monitor and control depth through discontinuous bouncing motions. The tool serves its own depth measurement function continuously.
Solution Approach 2:
The osteotome enables continuous rotational drilling and bone compaction without interruption for depth checking or tool exchange. The depth gauge provides continuous feedback, allowing the surgeon to maintain continuous useful action throughout the procedure.
4Manufacturing precision
If cutting flutes are used to excavate bone material, then the osteotomy can be enlarged, but bone material is removed instead of being compressed and densified
Solution Approach 1:
Instead of removing bone material through cutting flutes, the osteotome uses flutes with burnishing edges that compress and densify the bone material in place. The inversion of the traditional cutting approach preserves bone substance while achieving the desired osteotomy enlargement through plastic deformation.
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 tool enables efficient, single-pass densification and compaction of bone material around dental implant sites, reducing procedural time and heat generation, and minimizing the risk of membrane damage, allowing for precise and safe bone reconstruction.
Implementation Method 1
the internal wall surfaces of the bone, surrounding and defining the osteotomy, are effectively plastically deformed as a result being simultaneously expanded and compressed
Implementation Method 2
the plurality of flute structures are not spaced equiangularly around the longitudinal axis of the compression tool... This non-equiangular spacing has been discovered to eliminate or at least reduce the chattering or vibration
Implementation Method 3
the trailing margin portion will then compress such minute particles of bone radially outwardly and into the bone material circumferentially surrounding the implantation site
Data Source
AI summary
A compression tool for performing a finishing procedure, within a bore hole formed within a human jawbone so as to serve as an implantation site for a dental implant, by compression and densification processes, comprises a tapered body portion, and a plurality of flute sections disposed the body portion, wherein, when the compression tool is rotated in a clockwise direction and simultaneously axially inserted into the bore hole, the plurality of flute sections, which comprise structure for continuously cutting bone material from bone mass surrounding and defining the bore hole formed within the human jawbone, for accumulating the bone material so as to prevent the bone material from being evacuated from the implantation site, and for immediately compressing the bone material, cut from the bone mass surrounding and defining the bore hole formed within the human jawbone, back into the bone mass surrounding and defining the bore hole formed within the human jawbone will compress, compact, and enhance the density of the bone mass surrounding and defining the bore hole formed within the human jawbone.