Root Canal Debridement Device with Real-Time Optical Debris Detection
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Solution Overview
Problem
Current root canal treatment methods lack an effective means to visually determine if the root canal is fully cleaned and flushed, particularly due to the small diameter and complex geometry of the canal, leading to potential bacterial and necrotic tissue remnants that can cause procedure failure.
Innovation Solution
A method and apparatus that continuously evaluate the effectiveness of root canal debridement by delivering a fluid, evacuating it near the apex of the tooth, and using a sensing mechanism to detect debris presence, concentration, or type in real-time, utilizing a microcannula or macrocannula with a spectrometer to analyze the evacuated fluid for cleanliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current visual inspection methods are used to determine root canal cleanliness, then the procedure is simple and quick, but the measurement precision is insufficient to detect debris in small diameter canals
Solution Approach 1:
The patent replaces visual inspection with optical detection. A light source illuminates the root canal, and a photodetector measures light scattering caused by debris particles in the irrigant. This substitution of mechanical/visual assessment with optical measurement enables detection of debris in small diameter canals that are invisible to the naked eye.
Solution Approach 2:
The patent introduces an intermediary measurement system between the root canal and the practitioner. Instead of directly observing the canal, the system uses light scattering properties of debris in the irrigant as an intermediate indicator of cleanliness. The photodetector measures this intermediate optical property to infer the presence or absence of debris.
2Reliability
If the root canal is thoroughly cleaned using current methods, then debris removal is maximized, but the time required for the procedure increases due to lack of real-time feedback
Solution Approach 1:
The patent implements real-time feedback during the debridement process. The photodetector continuously monitors light scattering in the irrigant, providing immediate information about debris presence. This feedback allows the practitioner to stop irrigation once the canal is sufficiently clean, avoiding unnecessary extended irrigation time while ensuring adequate debris removal.
Solution Approach 2:
The system enables the irrigant to serve dual purposes: both cleaning the canal and providing information about cleanliness through its optical properties. The irrigant itself becomes the medium that carries information about debris presence back to the practitioner via light scattering measurements.
3Difficulty of detecting and measuring
If visual inspection is used to assess root canal cleanliness, then the equipment required is simple, but the detection capability is insufficient for small diameter canals
Solution Approach 1:
The patent replaces visual detection with optical measurement. A light source and photodetector system substitute for direct visual inspection. The photodetector measures light scattering caused by debris particles, converting an invisible problem into a measurable electrical signal that indicates debris presence in the small diameter canal.
Solution Approach 2:
The patent changes the measurement parameter from visual observation to optical scattering measurement. By measuring the intensity of light scattered by debris particles in the irrigant, the system detects debris presence based on optical properties rather than visual appearance, enabling detection in canals too small for direct visualization.
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 ensures thorough cleaning and disinfection of the root canal by continuously monitoring the debris removal process, reducing the risk of re-treatment and improving the efficacy of the root canal treatment by providing real-time feedback on cleanliness.
Implementation Method 1
using a sensing mechanism to detect debris presence, concentration, or type in real-time, utilizing a microcannula or macrocannula with a spectrometer to analyze the evacuated fluid for cleanliness
Implementation Method 2
utilizing a microcannula or macrocannula with a spectrometer to analyze the evacuated fluid for cleanliness
Data Source
AI summary
A method for continuously evaluating the effectiveness of debridement of a root canal of a tooth, the tooth having an open access cavity and an apex end, includes delivering a fluid to the open access cavity of the tooth, evacuating the fluid near the apex end of the tooth such that the fluid flushes most of the root canal before being evacuated, and continuously evaluating the evacuated fluid for at least one of a presence of debris, a concentration level of the debris, or a type of the debris. An apparatus for use in debriding a root canal of a tooth includes a microcannula or a macrocannula configured to evacuate a fluid in the root canal, and a sensing mechanism fluidically coupled to the microcannula or the macrocannula, the sensing mechanism configured to continuously sense debris in the evacuated fluid in real time.