Osseous Quality Measurement via Torque and Current Sensing
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Solution Overview
Problem
Current methods for evaluating osseous quality in dental implantology lack precision and are invasive, with non-invasive methods providing imprecise quantitative measurements, making it difficult to determine an optimal implant strategy.
Innovation Solution
A method and device that use a standard implantology kit with a micro motor and contra-angle reducer to measure osseous quality quantitatively during drilling, providing a precise spatial profile without additional invasive procedures, using current derivative measurements and an angular sensor to gather data on bone quality as a function of depth and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If non-invasive methods such as X-raying or MRI are used to evaluate osseous quality, then the evaluation can be performed without invasive procedures, but the measurement precision is insufficient and cannot provide quantitative spatial profiles of bone quality
Solution Approach 1:
The patent replaces non-invasive imaging methods (X-ray, MRI) with a mechanical measurement approach that uses torque and rotational speed data from a drilling tool to quantify bone quality. The mechanical system measures actual mechanical resistance during drilling, providing precise quantitative data while minimizing invasiveness by using standard dental drilling procedures.
Solution Approach 2:
The patent introduces an intermediary measurement system that captures torque and rotational speed data during the drilling process. This intermediary system (sensors and data processing unit) translates mechanical drilling parameters into quantitative bone quality metrics, bridging the gap between invasive mechanical measurement and non-invasive evaluation requirements.
2Measurement precision
If invasive methods such as drilling with empirical data collection are used to determine osseous quality, then quantitative measurement of mechanical resistance can be obtained, but additional invasive procedures and operational phases are required
Solution Approach 1:
The patent merges the bone quality measurement function with the standard dental drilling procedure. The same drilling tool that prepares the implant site also collects measurement data through torque and rotational speed sensing. This combination eliminates separate measurement procedures, reducing operational complexity while maintaining measurement precision.
Solution Approach 2:
The drilling tool is designed with multi-functionality, serving both as a bone preparation tool and a measurement device. The tool can perform standard drilling operations while simultaneously collecting data on mechanical resistance, allowing one device to fulfill multiple functions without requiring additional specialized equipment or procedures.
3Measurement precision
If reverse rotation is used to measure mechanical resistance during drilling, then torque and deformation data can be collected, but the drilling tool must be symmetrical which is not suitable for dental implants with screwing direction
Solution Approach 1:
The patent uses dynamic measurement during the forward drilling motion itself, rather than requiring reverse rotation. By measuring torque and rotational speed during the actual drilling operation in the screwing direction, the system adapts to directional drilling tools and eliminates the need for symmetrical tools or reverse rotation maneuvers.
Solution Approach 2:
The system implements real-time feedback measurement during drilling, where torque and rotational speed data are continuously collected and processed to determine bone quality. This feedback mechanism allows measurement during the forward drilling motion, adapting to the directional nature of dental drilling tools without requiring reverse rotation or symmetrical tool design.
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
Enables precise quantitative measurement of osseous quality, allowing for accurate classification and reconstruction of spatial profiles, reducing the risk of bone damage and improving implant placement strategies with minimal additional operational phases or invasive procedures.
Implementation Method 1
a unit for measuring instantly a value related to the consumption of electric current by the motor during the drilling of the bone with the drilling tool
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The present invention relates to a device and a method for measuring osseous quality.